UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

              CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT
                              INVESTMENT COMPANIES

Investment Company Act file number 811-08349

Name of Fund: BlackRock MuniHoldings Florida Insured Fund

Fund Address: P.O. Box 9011
              Princeton, NJ 08543-9011

Name and address of agent for service: Robert C. Doll, Jr., Chief Executive
      Officer, BlackRock MuniHoldings Florida Insured Fund, 800 Scudders Mill
      Road, Plainsboro, NJ 08536. Mailing address: P.O. Box 9011, Princeton,
      NJ 08543-9011

Registrant's telephone number, including area code: (609) 282-2800

Date of fiscal year end: 08/31/06

Date of reporting period: 09/01/05 - 08/31/06

Item 1 - Report to Stockholders



ALTERNATIVES   BLACKROCK SOLUTIONS   EQUITIES
FIXED INCOME   LIQUIDITY             REAL ESTATE

Annual Reports                                                         BLACKROCK

AUGUST 31, 2006

BlackRock MuniHoldings Florida Insured Fund

BlackRock MuniHoldings New York Insured Fund, Inc.

NOT FDIC INSURED
MAY LOSE VALUE
NO BANK GUARANTEE



BlackRock MuniHoldings Florida Insured Fund
BlackRock MuniHoldings New York Insured Fund, Inc.

The Benefits and Risks of Leveraging

The Funds utilize leveraging to seek to enhance the yield and net asset value of
their Common Shares or Common Stock. However, these objectives cannot be
achieved in all interest rate environments. To leverage, the Funds issue
Preferred Shares or Stock, which pay dividends at prevailing short-term interest
rates, and invest the proceeds in long-term municipal bonds. The interest earned
on these investments, net of dividends to Preferred Shares or Stock, is paid to
Common Shareholders or Common Stock shareholders in the form of dividends, and
the value of these portfolio holdings is reflected in the per share net asset
value of the Fund's Common Shares or Stock. However, in order to benefit Common
Shareholders or Common Stock shareholders, the yield curve must be positively
sloped; that is, short-term interest rates must be lower than long-term interest
rates. At the same time, a period of generally declining interest rates will
benefit Common Shareholders or Common Stock shareholders. If either of these
conditions change, then the risks of leveraging will begin to outweigh the
benefits.

To illustrate these concepts, assume a fund's Common Shares or Stock
capitalization of $100 million and the issuance of Preferred Shares or Stock for
an additional $50 million, creating a total value of $150 million available for
investment in long-term municipal bonds. If prevailing short-term interest rates
are approximately 3% and long-term interest rates are approximately 6%, the
yield curve has a strongly positive slope. The fund pays dividends on the $50
million of Preferred Shares or Stock based on the lower short-term interest
rates. At the same time, the fund's total portfolio of $150 million earns the
income based on long-term interest rates.

In this case, the dividends paid to Preferred Shareholders or Preferred Stock
shareholders are significantly lower than the income earned on the fund's
long-term investments, and therefore the Common Shareholders or Common Stock
shareholders are the beneficiaries of the incremental yield. However, if
short-term interest rates rise, narrowing the differential between short-term
and long-term interest rates, the incremental yield pickup on the Common Shares
or Stock will be reduced or eliminated completely. At the same time, the market
value on the fund's Common Shares or Stock (that is, its price as listed on the
New York Stock Exchange), may, as a result, decline. Furthermore, if long-term
interest rates rise, the Common Shares' or Stock's net asset value will reflect
the full decline in the price of the portfolio's investments, since the value of
the fund's Preferred Shares or Stock does not fluctuate. In addition to the
decline in net asset value, the market value of the fund's Common Shares or
Stock may also decline.

As a part of their investment strategy, the Funds may invest in certain
securities whose potential income return is inversely related to changes in a
floating interest rate ("inverse floaters"). In general, income on inverse
floaters will decrease when short-term interest rates increase and increase when
short-term interest rates decrease. Investments in inverse floaters may be
characterized as derivative securities and may subject the Funds to the risks of
reduced or eliminated interest payments and losses of invested principal. In
addition, inverse floaters have the effect of providing investment leverage and,
as a result, the market value of such securities will generally be more volatile
than that of fixed rate, tax-exempt securities. To the extent the Funds invest
in inverse floaters, the market value of each Fund's portfolio and the net asset
value of each Fund's shares may also be more volatile than if the Funds did not
invest in these securities. As of February 28, 2006, the percentages of
BlackRock MuniHoldings Florida Insured Fund's and BlackRock MuniHoldings New
York Insured Fund, Inc.'s total net assets invested in inverse floaters were
5.36% and 7.22%, respectively, before the deduction of Preferred Shares or
Stock.


2               ANNUAL REPORTS                  AUGUST 31, 2006


A Letter to Shareholders

Dear Shareholder

It is my pleasure to welcome you to BlackRock.

On September 29, 2006, BlackRock, Inc. ("BlackRock") and Merrill Lynch
Investment Managers, L.P. ("MLIM") united to form one of the largest asset
management firms in the world. Now with more than $1 trillion in assets under
management, over 4,000 employees in 18 countries and representation in key
markets worldwide, BlackRock's global presence means greater depth and scale to
serve you.

The new BlackRock unites some of the finest money managers in the industry. Our
ranks include more than 500 investment professionals globally -- portfolio
managers, research analysts, risk management professionals and traders. With
offices strategically located around the world, our investment professionals
have in-depth local knowledge and the ability to leverage our global presence
and robust infrastructure to deliver focused investment solutions. BlackRock's
professional investors are supported by disciplined investment processes and
best-in-class technology, ensuring that our portfolio managers are well equipped
to research, uncover and capitalize on the opportunities the world's markets
have to offer.

The BlackRock culture emphasizes excellence, teamwork and integrity in the
management of a variety of equity, fixed income, cash management, alternative
investment and real estate products. Our firm's core philosophy is grounded in
the belief that experienced investment and risk professionals using disciplined
investment processes and sophisticated analytical tools can consistently add
value to client portfolios.

As you probably are aware, former MLIM investment products now carry the
"BlackRock" name. This is reflected in newspapers and online fund reporting
resources. Your account statements will reflect the BlackRock name beginning
with the October month-end reporting period. Unless otherwise communicated to
you, your funds maintain the same investment objectives that they did prior to
the combination of MLIM and BlackRock. Importantly, this union does not affect
your brokerage account or your relationship with your financial advisor. Clients
of Merrill Lynch remain clients of Merrill Lynch.

We view this combination of asset management leaders as a complementary union
that reinforces our commitment to shareholders. Individually, each firm made
investment performance its single most important mission. Together, we are even
better prepared to capitalize on market opportunities on behalf of our
shareholders. Our focus on investment excellence is accompanied by an unwavering
commitment to service, enabling us to assist clients, in cooperation with their
financial professionals, in working toward their investment goals. We thank you
for allowing us the opportunity, and we look forward to serving your investment
needs in the months and years ahead as the new BlackRock.

                                                         Sincerely,


                                                         /s/ Robert C. Doll, Jr.

                                                         Robert C. Doll, Jr.
                                                         Vice Chairman
                                                         BlackRock, Inc.

Data, including assets under management, are as of June 30, 2006.


                ANNUAL REPORTS                  AUGUST 31, 2006                3


A Discussion With Your Funds' Portfolio Managers

      With the intermediate portion of the municipal yield curve expected to
perform well as monetary tightening ends, we are beginning to shift some focus
to that area of the curve while continuing to emphasize yield generation in the
portfolios.

Describe the recent market environment relative to municipal bonds.

Long-term bond yields rose throughout most of the past year before declining in
August as bond prices correspondingly improved. The shift in direction was
largely a reaction to the Federal Reserve Board's (the Fed's) decision on August
8 to refrain from raising the federal funds target rate. After 17 consecutive
interest rate hikes since mid-2004, a moderation in economic growth and decline
in inflationary expectations were cited as reasons for the Fed's pause. Earlier
in the 12-month period, bond yields rose steadily (and their prices fell) as
investors focused on solid economic growth in the United States and abroad.
Despite a decline in gross domestic product growth between the first and second
quarters of 2006, U.S. economic activity so far this year has outpaced the 3.2%
annual growth rate posted in 2005. Rising commodity prices also stoked
inflationary fears, further weighing on bond prices.

Overall, 30-year U.S. Treasury bond yields rose 62 basis points (.62%) during
the 12-month period to 4.88%, while 10-year U.S. Treasury note yields rose 72
basis points to 4.74%. The yield curve continued to flatten as short-term
interest rates rose more than longer-term interest rates. Municipal bond yields
also rose, although the tax-exempt market's strong technical position provided
significant price support and allowed municipal bond prices to decline less than
those of taxable bonds. As measured by Municipal Market Data, yields on
AAA-rated municipal issues maturing in 30 years rose just four basis points to
4.26%, while yields on AAA-rated issues maturing in 10 years rose 28 basis
points to 3.78%.

The rise in yields prompted a revival in investor demand for municipal bonds.
The increased demand also was triggered by seasonal factors that served to
generate large cash flows into investor accounts. Investors received more than
$40 billion in June and July from coupon income and the proceeds from bond
maturities and early redemptions. Consequently, municipal bond fund flows
continued to be supportive. As reported by the Investment Company Institute,
open-end tax-exempt bond funds received net new cash inflows of over $6.8
billion in the first seven months of 2006, compared to $4.2 billion during the
same period in 2005. Weekly fund flows in August, as reported by AMG Data,
averaged approximately $368 million, above the $284 weekly average seen thus far
in 2006.

Also contributing to the outperformance of the municipal market has been
declines in new issuance. During the past six months, more than $195 billion in
new long-term tax-exempt bonds was underwritten, a 10% decline compared to the
same period a year earlier. Recent declines in issuance largely have been the
result of a 56% drop in refunding activity so far this year. Rising bond yields
have made the refinancing of existing higher-couponed debt issues increasingly
problematic, as the potential economic savings have rapidly diminished. In
addition, the improved fiscal condition of many state and local governments has
resulted in lower borrowing trends, with many new municipal capital projects
financed from existing budget surpluses. The declines in issuance have led many
analysts to lower their annual issuance forecasts. Lower annual issuance would
further solidify the tax-exempt market's already positive technical position.

Looking ahead, municipal market fundamentals are likely to remain favorable,
leading us to expect the tax-exempt market to perform at least as well as
comparable U.S. Treasury issues. Attractive yield ratios have continued to draw
both retail and institutional investors to the municipal market. Based on this,
and the prospect for reduced annual issuance in 2006, we believe the municipal
market should continue to perform well in the coming months.


4               ANNUAL REPORTS                  AUGUST 31, 2006


BlackRock MuniHoldings Florida Insured Fund

Describe conditions in the State of Florida.

Florida maintains ratings of Aa1, AAA and AA+ from Moody's, Standard & Poor's
and Fitch, respectively. Governor Jeb Bush proposed a $70.8 billion budget for
fiscal year 2006 - 2007, representing an increase of $4.5 billion from the prior
year. The budget reflects spending constraints, tax cuts, bolstered reserves and
increased revenue growth, while keeping spending below anticipated personal
income growth. Because the state's increased revenue sources are not all
permanent, funds will be set aside to finance new programs in the future.

Fiscal discipline has allowed the state to offer tax relief to its residents and
businesses in the form of tax credits, tax-free shopping days and reduced sales
tax on equipment. Three areas of the budget account for 90% of the state's total
expenditures: education at 49%, health and human services at 27% and public
safety at 14%. Florida was projected to end fiscal year 2005 - 2006 with an
operating surplus and increases in both general fund reserves and the budget
stabilization fund. This year represented the last in which the state would
impose the intangible tax on all Floridians. Although the tax is not a major
revenue stream, no new tax has been proposed and it is too early to determine if
the loss of the intangible tax will have a meaningful effect on the state's
finances.

Florida's economy continues to outperform that of both the nation and other
southern states. Job creation among diversified industries has encouraged
migration into the state, promoting diverse demographic trends. Although
national economic trends have put pressure on the state, we believe Florida is
well positioned given its record of proactive management and financial
flexibility.

How did the Fund perform during the fiscal year?

For the 12-month period ended August 31, 2006, the Common Shares of BlackRock
MuniHoldings Florida Insured Fund had net annualized yields of 5.63% and 5.78%,
based on a year-end per share net asset value of $14.75 and a per share market
price of $14.37, respectively, and $.831 per share income dividends. Over the
same period, the total investment return on the Fund's Common Shares was +2.10%,
based on a change in per share net asset value from $15.32 to $14.75, and
assuming reinvestment of all distributions.

The Fund's total return, based on net asset value, lagged the +3.37% average
return of the Lipper Florida Municipal Debt Funds category for the 12-month
period. (Funds in this Lipper category limit their investment to those
securities exempt from taxation in the State of Florida.) The Fund's
underperformance occurred primarily in the first half of the fiscal year when
the yield curve flattened dramatically and short and intermediate maturities
underperformed. We had exposure to these sectors through bonds that had been
prerefunded in prior periods -- thereby transforming several of our longer-dated
issues into intermediate-maturity issues. Despite their underperformance on a
total return basis, these bonds were acquired in a higher interest rate
environment and, as such, contribute meaningfully to the Fund's yield. This
supports our long-term commitment to providing shareholders with an attractive
level of income and allowed the Fund to maintain an above-average yield compared
to its peers. We intend to reduce some of the Fund's concentration in
prerefunded bonds over time; however, their high acquisition yields would be
difficult to replace in the current environment.

To a lesser extent, the Fund's total return performance was affected by its
conservative investment parameters. This prohibited us from investing in
non-investment grade issues, which outperformed the high-grade market as credit
spreads narrowed during the year.

For the six-month period ended August 31, 2006, the total investment return on
the Fund's Common Shares was +1.86%, based on a change in per share net asset
value from $14.90 to $14.75, and assuming reinvestment of all distributions.

For a description of the Fund's total investment return based on a change in the
per share market value of the Fund's Common Shares (as measured by the trading
price of the Fund's shares on the New York Stock Exchange), and assuming
reinvestment of dividends, please refer to the Financial Highlights section of
this report. As a closed-end fund, the Fund's shares may trade in the secondary
market at a premium or discount to the Fund's net asset value. As a result,
total investment returns based on changes in the market value of the Fund's
Common Shares can vary significantly from total investment returns based on
changes in the Fund's net asset value.


                ANNUAL REPORTS                  AUGUST 31, 2006                5


A Discussion With Your Funds' Portfolio Managers (continued)

What changes were made to the portfolio during the period?

For most of the year, we generally focused on premium-coupon bonds in the
20-year - 25-year maturity range whenever they became available. This was
consistent with our goal of increasing the income provided to shareholders and
muting the Fund's net asset value volatility, particularly as the yield curve
flattened. However, as the year progressed, we began to see some opportunity in
the 15-year - 20-year area of the curve. This maturity range had suffered most
under the weight of the Fed's interest rate hikes and, we believe, could be
poised for strong relative performance as the yield curve resteepens.

Issuance of Florida municipal bonds increased approximately 45% during the
period compared to the same 12 months a year ago. However, as has been the case
for some time, few new issues met our desired investment characteristics. Much
of the supply came in the form of refinancings, and the majority of the new
issues offered yields below 5%. In general, the cost of obtaining 5.25% coupons
in the new-issue market remained prohibitive. Importantly, we remained fully
invested throughout the year in order to augment yield.

For the six-month period ended August 31, 2006, the Fund's Auction Market
Preferred Shares (AMPS) had average yields as follows: Series A, 3.32%; Series
B, 3.41%; Series C, 3.39%; Series D, 3.23%; and Series E, 3.34%. The Fed raised
the short-term interest rate target 175 basis points during the 12-month
reporting period, and this continued to affect the Fund's borrowing costs. On
August 8, the Fed opted to pause in its interest rate-hiking campaign and is
expected to be "data dependent" in determining monetary policy going forward. As
such, we would expect additional increases in the Fund's cost of funds to be
more limited. Despite the interest rate increases during the period, the
tax-exempt yield curve maintained a positive slope, allowing us to borrow at a
lower rate than where we invest. However, should the spread between short-term
and long-term interest rates narrow, the benefits of leveraging will decline
and, as a result, reduce the yield on the Fund's Common Shares. At the end of
the period, the Fund's leverage amount, due to AMPS, was 39.52% of total net
assets, before the deduction of Preferred Shares. (For a more complete
explanation of the benefits and risks of leveraging, see page 2 of this report
to shareholders.)

How would you characterize the Fund's position at the close of the period?

We would characterize the Fund's position as fairly neutral in terms of interest
rate risk. We are continuing in our efforts to increase the Fund's exposure to
bonds with maturities in the 10-year - 20-year range. At the same time, to
enhance yield, we are looking to add some 20-year - 30-year bonds with coupons
in the area of 5.25%, without paying a premium to the AAA scale.

Although the Fed paused in its interest rate-hiking campaign on August 8,
leaving the federal funds rate unchanged at 5.25%, the central bank has
indicated that it will continue to look to the economic and inflationary data
for signposts in determining future monetary policy. As such, we would expect
the U.S. equity and bond markets to remain volatile as investors continue to
anticipate and react to economic data and Fed actions. Against this backdrop, we
will continue to maintain a fully invested portfolio and intend to use periods
of volatility to pursue higher-coupon bonds whenever they are attractively
priced.


6               ANNUAL REPORTS                  AUGUST 31, 2006


BlackRock MuniHoldings New York Insured Fund, Inc.

Describe conditions in the State of New York.

In December, credit-rating agency Moody's upgraded New York's rating to Aa3, the
state's highest rating from Moody's since 1975. Standard and Poor's and Fitch
maintained ratings of AA and AA-, respectively, and all three agencies assign a
stable outlook to the state's ratings. The New York economy continues to improve
and revenue collections are increasing. State tax collections remain largely
dependent on the performance of the financial sector, but tax receipts over the
past few years have been strong.

New York's 2006 fiscal year closed on March 31, and preliminary operating
results indicate a $2 billion surplus and a $945 million rainy day fund. The
2006 budget had closed an estimated $4 billion deficit. The state's 2006 - 2007
enacted budget was finalized on April 26, 2006. The $112.5 billion budget, which
kept most of Governor George Pataki's proposals intact, includes about $850
million in tax cuts and allocates much of the prior year's surplus toward
out-year gaps. The budget also includes $700 million in school operating aid as
part of compliance with a court order on school funding. It is unclear whether
this amount, as well as additional capital grants and bonding authority to New
York City, will be sufficient in meeting the court mandate.

In terms of job growth in the state, July 2006 employment estimates reflect a 1%
increase from July 2005 levels. New York ranks fifth-highest among all states in
per capita income. Economic growth is disproportionately stronger downstate,
while the upstate economy remains lackluster.

How did the Fund perform during the fiscal year?

For the 12-month period ended August 31, 2006, the Common Stock of BlackRock
MuniHoldings New York Insured Fund, Inc. had net annualized yields of 5.52% and
5.65%, based on a year-end per share net asset value of $14.96 and a per share
market price of $14.62, respectively, and $.826 per share income dividends. Over
the same period, the total investment return on the Fund's Common Stock was
+1.98%, based on a change in per share net asset value from $15.54 to $14.96,
and assuming reinvestment of all distributions.

The Fund's total return, based on net asset value, lagged the +2.66% average
return of the Lipper New York Insured Municipal Debt Funds category for the
12-month period. (Funds in this Lipper category invest primarily in securities
exempt from taxation in New York and insured as to timely payment.) However, the
Fund led its Lipper group in terms of yield, providing an above-average
distribution rate. This reflects our focus on enhancing tax-exempt income for
shareholders.

Detracting from the Fund's total return for much of the period was our slightly
long duration profile. We entered the fiscal year with a slightly long duration
in expectation that the Fed would stop raising interest rates sooner than it
actually did. (Duration is a measure of interest rate sensitivity. A shorter
duration means less sensitivity to interest rate moves, and vice versa.)
Although the Fed tightened more than we anticipated, Fund performance improved
since the central bank's pause on August 8. With the economy slowing and,
prospectively, taking the pressure off inflation, we believe the Fed is finished
raising interest rates for the foreseeable future and that the next move is more
likely to be one of easing. This would set the stage for a relatively static
interest rate environment in the months ahead, a scenario in which
higher-yielding bonds are an advantage.

Other factors that detracted from performance were bond calls that occurred
during the period, causing the portfolio to lose some of its high-coupon
holdings prior to maturity. Our exposure to Puerto Rico credits also was a
negative in the first half of the year as the commonwealth was downgraded and
its bonds underperformed. This situation stabilized somewhat with the passing of
Puerto Rico's budget this summer. The majority of our exposure to Puerto Rico is
now in insured credits.

Contributing to Fund performance during the year were our positions in some
out-of-favor credits, including discount bonds. As the public grew more
comfortable with the idea that the Fed had finished its current tightening
cycle, we saw renewed retail interest in the market. The retail buyer tends to
like discount or current coupon bonds and, therefore, we began to see these
types of holdings outperform on both a yield and total return basis.

For the six-month period ended August 31, 2006, the total investment return on
the Fund's Common Stock was +1.65%, based on a change in per share net asset
value from $15.12 to $14.96, and assuming reinvestment of all distributions.

For a description of the Fund's total investment return based on a change in the
per share market value of the Fund's


                ANNUAL REPORTS                  AUGUST 31, 2006                7


A Discussion With Your Funds' Portfolio Managers (concluded)

Common Stock (as measured by the trading price of the Fund's shares on the New
York Stock Exchange), and assuming reinvestment of dividends, please refer to
the Financial Highlights section of this report. As a closed-end fund, the
Fund's shares may trade in the secondary market at a premium or discount to the
Fund's net asset value. As a result, total investment returns based on changes
in the market value of the Fund's Common Stock can vary significantly from total
investment returns based on changes in the Fund's net asset value.

What changes were made to the portfolio during the period?

Portfolio activity reflected our focus on providing an attractive level of
tax-exempt income. At times when interest rates rose, we sought to engage in
yield pickup swaps -- that is, booking bonds at higher yields than those we
swapped out of in order to improve the distribution rate of the portfolio.
Because the new bonds come at lower prices than the book prices on the bonds
being sold, this strategy also allows the portfolio to book losses, which helps
to protect shareholders from potential taxable gains in the future. We also
looked to buy some out-of-favor coupons, primarily discount bonds and slightly
longer-maturity issues, in an effort to pick up yield. We aimed specifically to
increase exposure to housing and alternative minimum tax bonds, both of which
offer enhanced yield. Finally, we extended out on the municipal curve in search
of yield and, as a result, the Fund's average maturity increased approximately
one-half year compared to August 2005. The long end of the curve has been more
attractive for yield pickup and outperformed initially on a price basis when the
Fed paused.

In our efforts to diversify the portfolio, we made significant purchases
recently in Yankees and Mets (Queens Stadium) bonds. Also during the year, we
purchased bonds issued for the Jacob Javitz Convention Center, Long Island Power
Authority, New York State Energy Brooklyn Union Gas and the Puerto Rico
Convention Center. All of these issues are insured. We were able to make these
additions despite a 20% decline in New York new issuance over the past year. In
the Fund's uninsured basket, we have concentrated on housing and education
bonds, to the extent possible, and favored higher-yielding, lower-rated
investment grade credits over AAA-rated bonds. Notably, the portfolio benefited
from credit rating upgrades in New York during the past year. The upgrades of
the city's and state's credit have added to portfolio credit quality while also
translating into bond price appreciation.

On the sell side, we actively sold some bonds as their call protection declined
to within or under three years. As bonds approach their call dates, the
amortization of the premium price accelerates -- that is, the bonds' price
declines at a faster rate and, therefore, they are likely to underperform the
market. In seeking to balance yield and total return, we opted to sell some of
these high book yield bonds at a premium ahead of their call date given that, on
a total return basis, we would expect them to lag.

For the six-month period ended August 31, 2006, the Fund's Auction Market
Preferred Stock (AMPS) had average yields as follows: Series A, 2.96%; Series B,
2.94%; Series C, 3.09%; Series D, 3.10%; and Series E, 3.08%. The Fed raised the
short-term interest rate target 175 basis points during the 12-month reporting
period, and this continued to affect the Fund's borrowing costs. Given the Fed's
recent pause, we would expect additional increases in the Fund's cost of funds
to be more limited. Despite the interest rate increases during the period, the
tax-exempt yield curve maintained a positive slope, allowing us to borrow at a
lower rate than where we invest. However, should the spread between short-term
and long-term interest rates narrow, the benefits of leveraging will decline
and, as a result, reduce the yield on the Fund's Common Stock. At the end of the
period, the Fund's leverage amount, due to AMPS, was 40.45% of total net assets,
before the deduction of Preferred Stock. (For a more complete explanation of the
benefits and risks of leveraging, see page 2 of this report to shareholders.)


8               ANNUAL REPORTS                  AUGUST 31, 2006


How would you characterize the portfolio's position at the close of the period?

In terms of duration, the Fund remains neutral to slightly long relative to its
New York insured peers. Although we still prefer the long end of the curve for
its yield enhancement potential, we are concentrating more on the 20-year -
25-year range as opposed to the 25-year - 30-year range.

Historically, when the Fed stops tightening and leans toward easing, the long
end of the curve tends to underperform on a yield basis as the short end
rallies. So, while our emphasis on the long end has benefited the portfolio in
terms of yield and price appreciation thus far, we would expect the area of
outperformance to shift down the curve somewhat. We intend to retain our
longer-dated positions for their attractive yields, but expect the intermediate
maturity range to perform well as the economy slows and inflationary fears ebb.
As such, we believe it is prudent to target the intermediate to long maturity
range. Overall, we continue to look for opportunities to diversify the Fund
while also seeking to balance yield and total return potential in the portfolio.

Robert D. Sneeden
Vice President and Portfolio Manager
BlackRock MuniHoldings Florida Insured Fund

Timothy T. Browse, CFA
Vice President and Portfolio Manager
BlackRock MuniHoldings New York Insured Fund, Inc.

September 7, 2006

Announcement of Annual Stockholders Meeting

The Funds have determined that their annual stockholders meeting originally
scheduled to be held in January 2007 will be postponed until and will be held in
June 2007. Proposals of stockholders intended to be presented at the meeting
must be received by the Funds by January 15, 2007 for inclusion in each Fund's
proxy statement and form of proxy for that meeting. The persons named as proxies
in the proxy materials for the Funds' 2007 annual meeting of stockholders may
exercise discretionary authority with respect to any stockholder proposal
presented at such meeting if written notice of such proposal has not been
received by the Funds by April 1, 2007. Written proposals and notices should be
sent to the Secretary of the Funds, 800 Scudders Mill Road, Plainsboro, New
Jersey 08536.


                ANNUAL REPORTS                  AUGUST 31, 2006                9


Portfolio Information

Quality Profiles as of August 31, 2006

BlackRock MuniHoldings
Florida Insured Fund                                            Percent of Total
By S&P/Moody's Rating                                             Investments
--------------------------------------------------------------------------------
AAA/Aaa ...............................................                  93.6%
AA/Aa .................................................                   0.5
A/A ...................................................                   3.3
BBB/Baa ...............................................                   0.8
Other* ................................................                   1.8
--------------------------------------------------------------------------------
*     Includes portfolio holdings in short-term investments.

BlackRock MuniHoldings
New York Insured Fund, Inc.                                     Percent of Total
By S&P/Moody's Rating                                             Investments
--------------------------------------------------------------------------------
AAA/Aaa ...............................................                  89.5%
AA/Aa .................................................                   6.2
A/A ...................................................                   3.1
BBB/Baa ...............................................                   0.3
Other* ................................................                   0.9
--------------------------------------------------------------------------------
*     Includes portfolio holdings in short-term investments and variable rate
      demand notes.

Swap Agreements

The Funds may invest in swap agreements, which are over-the-counter contracts in
which one party agrees to make periodic payments based on the change in market
value of a specified bond, basket of bonds or index in return for periodic
payments based on a fixed or variable interest rate or the change in market
value of a different bond, basket of bonds or index. Swap agreements may be used
to obtain or reduce exposure to a bond or market without owning or taking
physical custody of securities. Swap agreements involve the risk that the party
with whom each Fund has entered into the swap will default on its obligation to
pay the Fund and the risk that the Fund will not be able to meet its obligations
to pay the other party to the agreement.

Dividend Policy

The Funds' dividend policy is to distribute all or a portion of their net
investment income to their shareholders on a monthly basis. In order to provide
shareholders with a more stable level of dividend distributions, the Funds may
at times pay out less than the entire amount of net investment income earned in
any particular month and may at times, in any particular month, pay out such
accumulated but undistributed income in addition to net investment income earned
in that month. As a result, the dividends paid by the Funds for any particular
month may be more or less than the amount of net investment income earned by the
Funds during such month. The Funds' current accumulated but undistributed net
investment income, if any, is disclosed in the Statement of Net Assets, which
comprises part of the financial information included in these reports.


10              ANNUAL REPORTS                  AUGUST 31, 2006


Schedule of Investments
                 BlackRock MuniHoldings Florida Insured Fund      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
District of Columbia--0.4%
-------------------------------------------------------------------------------
 $  2,050  Metropolitan Washington Airports Authority, D.C.,
           Airport System Revenue Bonds, AMT, Series A, 5.25%
           due 10/01/2032 (h)                                         $   2,141
===============================================================================
Florida--154.5%
-------------------------------------------------------------------------------
    6,600  Alachua County, Florida, School Board, COP, 5.25%
           due 7/01/2029 (b)                                              7,035
-------------------------------------------------------------------------------
           Bay County, Florida, Sales Tax Revenue Bonds (b):
    3,490       5% due 9/01/2025                                          3,719
    3,665       5% due 9/01/2026                                          3,896
-------------------------------------------------------------------------------
    4,195  Beacon Tradeport Community Development District,
           Florida, Special Assessment Revenue Refunding Bonds
           (Commercial Project), Series A, 5.625% due 5/01/2032 (k)       4,545
-------------------------------------------------------------------------------
      680  Brevard County, Florida, HFA, S/F Mortgage Revenue
           Bonds, AMT, 6.80% due 3/01/2028 (d)(g)                           688
-------------------------------------------------------------------------------
    8,000  Broward County, Florida, Educational Facilities Authority
           Revenue Bonds (Nova Southeastern University), 5%
           due 4/01/2031 (n)                                              8,372
-------------------------------------------------------------------------------
           Cape Coral, Florida, Special Obligation Revenue Bonds
           (a):
    3,000       5% due 10/01/2030                                         3,163
    4,190       5% due 10/01/2033                                         4,407
-------------------------------------------------------------------------------
      440  Clay County, Florida, HFA, S/F Mortgage Revenue Bonds,
           AMT, 6.55% due 3/01/2028 (d)(i)                                  450
-------------------------------------------------------------------------------
    1,320  Clay County, Florida, School Board, COP (Master Lease
           Program), 5.75% due 7/01/2010 (a)(j)                           1,432
-------------------------------------------------------------------------------
      900  Collier County, Florida, IDA, IDR, Refunding (Southern
           States Utilities), AMT, 6.50% due 10/01/2025                     919
-------------------------------------------------------------------------------
           Dade County, Florida, Water and Sewer System
           Revenue Bonds (h):
   20,575       5.25% due 10/01/2021                                     21,114
   21,640       5.25% due 10/01/2026                                     22,151
-------------------------------------------------------------------------------
    2,000  Deltona, Florida, Transportation Capital Improvement
           Revenue Bonds, 5.125% due 10/01/2026 (a)                       2,142
-------------------------------------------------------------------------------
           Emerald Coast, Florida, Utilities Authority, System
           Revenue Bonds (h):
    1,130       5.25% due 1/01/2026                                       1,223
    1,560       5.25% due 1/01/2036                                       1,673
-------------------------------------------------------------------------------
           Escambia County, Florida, HFA, S/F Mortgage Revenue
           Refunding Bonds (Multi-County Program), AMT, Series A
           (a)(i):
      145       6.30% due 10/01/2020                                        145
      535       6.375% due 10/01/2026                                       536
-------------------------------------------------------------------------------
    1,835  Flagler County, Florida, Capital Improvement Revenue
           Bonds, 5% due 10/01/2035 (a)                                   1,921
-------------------------------------------------------------------------------
           Florida HFA, Homeowner Mortgage Revenue Refunding
           Bonds, AMT, Series 2 (a):
    1,615       5.75% due 7/01/2014                                       1,638
   12,965       5.90% due 7/01/2029                                      13,168
-------------------------------------------------------------------------------
      850  Florida Housing Finance Corporation, Homeowner
           Mortgage Revenue Refunding Bonds, AMT, Series 4,
           6.25% due 7/01/2022 (c)                                          864
-------------------------------------------------------------------------------
    2,055  Florida Housing Finance Corporation, Housing Revenue
           Bonds (Waverly Apartments), AMT, Series C-1, 6.30%
           due 7/01/2030 (c)                                              2,192
-------------------------------------------------------------------------------
           Florida Municipal Loan Council Revenue Bonds,
           Series B (a):
    1,285       5.375% due 11/01/2025                                     1,365
    4,150       5.375% due 11/01/2030                                     4,399
-------------------------------------------------------------------------------
    3,750  Florida State Board of Education, Capital Outlay, GO,
           Public Education, Refunding, Series D, 5.75%
           due 6/01/2022 (c)                                              4,055
-------------------------------------------------------------------------------
    1,000  Florida State Board of Education, Capital Outlay, GO,
           Public Education, Series C, 5.75% due 6/01/2010 (h)(j)         1,084
-------------------------------------------------------------------------------
   12,725  Florida State Board of Education, Lottery Revenue
           Bonds, DRIVERS, Series 222, 8.594%
           due 7/01/2017 (f)(h)                                          15,340
-------------------------------------------------------------------------------
    2,200  Florida State Board of Regents, Housing Revenue
           Bonds (University of Central Florida), 5.25%
           due 10/01/2026 (h)                                             2,322
-------------------------------------------------------------------------------
    7,165  Florida State Board of Regents, University Systems
           Improvement Revenue Bonds, 5.25%
           due 7/01/2007 (a)(j)                                           7,335
-------------------------------------------------------------------------------
    3,505  Florida State Department of General Services, Division
           Facilities Management Revenue Bonds (Florida Facilities
           Pool), Series A, 6% due 9/01/2010 (b)(j)                       3,848
-------------------------------------------------------------------------------
           Florida State Governmental Utility Authority, Utility
           Revenue Bonds (b):
    2,350       (Citrus Utility System), 5.125% due 10/01/2033            2,469
    2,900       (Lehigh Utility System), 5.125% due 10/01/2033            3,046
-------------------------------------------------------------------------------
   14,325  Florida State Turnpike Authority, Turnpike Revenue
           Bonds, DRIVERS, Series 218, 8.755%
           due 7/01/2029 (f)(h)                                          17,269
-------------------------------------------------------------------------------
    8,805  Fort Myers, Florida, Utility System Revenue Refunding
           Bonds, 5% due 10/01/2031 (a)                                   9,305
-------------------------------------------------------------------------------
    3,750  Halifax Hospital Medical Center, Florida, Hospital
           Revenue Refunding and Improvement Bonds, Series A,
           5.25% due 6/01/2026                                            3,933
-------------------------------------------------------------------------------
   16,000  Hernando County, Florida, School Board, COP, 5%
           due 7/01/2030 (a)                                             16,802
-------------------------------------------------------------------------------

Portfolio Abbreviations

To simplify the listings of portfolio holdings in the Schedules of Investments,
we have abbreviated the names of many of the securities according to the list at
right.

AMT             Alternative Minimum Tax (subject to)
COP             Certificates of Participation
DRIVERS         Derivative Inverse Tax-Exempt Receipts
GO              General Obligation Bonds
HFA             Housing Finance Agency
IDA             Industrial Development Authority
IDR             Industrial Development Revenue Bonds
M/F             Multi-Family
PCR             Pollution Control Revenue Bonds
PILOT           Payment in Lieu of Taxes
RIB             Residual Interest Bonds
S/F             Single-Family
VRDN            Variable Rate Demand Notes


                ANNUAL REPORTS                  AUGUST 31, 2006               11


Schedule of Investments (continued)
                 BlackRock MuniHoldings Florida Insured Fund      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
Florida (continued)
-------------------------------------------------------------------------------
           Highlands County, Florida, Health Facilities Authority,
           Hospital Revenue Bonds (Adventist Health System):
 $  7,135       Series A, 6% due 11/15/2011 (j)                       $   7,959
    6,285       Series C, 5.25% due 11/15/2036                            6,614
-------------------------------------------------------------------------------
           Hillsborough County, Florida, School Board, COP (a)(j):
    6,600       5.375% due 7/01/2009                                      6,916
   33,400       6% due 7/01/2009                                         35,860
-------------------------------------------------------------------------------
    1,300  Indian River County, Florida, Water and Sewer Revenue
           Refunding Bonds, Series A, 5.25% due 9/01/2018 (h)             1,362
-------------------------------------------------------------------------------
    1,800  Jacksonville, Florida, Economic Development
           Commission, Health Care Facilities Revenue Bonds
           (Mayo Clinic--Jacksonville), Series A, 5.50%
           due 11/15/2036 (a)                                             1,939
-------------------------------------------------------------------------------
    7,305  Jacksonville, Florida, Guaranteed Entitlement Revenue
           Refunding and Improvement Bonds, 5.25%
           due 10/01/2032 (h)                                             7,777
-------------------------------------------------------------------------------
    1,870  Jacksonville, Florida, Port Authority, Seaport Revenue
           Bonds, AMT, 5.625% due 11/01/2026 (a)                          1,982
-------------------------------------------------------------------------------
           Jacksonville, Florida, Sales Tax Revenue Bonds:
    2,000       5.50% due 10/01/2016 (b)                                  2,163
    3,800       5.50% due 10/01/2018 (b)                                  4,097
   11,400       5% due 10/01/2027 (a)                                    11,897
-------------------------------------------------------------------------------
    1,500  Jacksonville, Florida, Water and Sewer Revenue Bonds
           (United Water Florida Project), AMT, 6.35%
           due 8/01/2025 (b)                                              1,518
-------------------------------------------------------------------------------
    9,963  Lee County, Florida, Airport Revenue Bonds, RIB, AMT,
           Series 811-X, 8.29% due 10/01/2029 (c)(f)                     11,634
-------------------------------------------------------------------------------
    4,225  Lee County, Florida, Capital Revenue Bonds, 5.25%
           due 10/01/2023 (b)                                             4,560
-------------------------------------------------------------------------------
       85  Lee County, Florida, HFA, S/F Mortgage Revenue Bonds
           (Multi-County Program), AMT, Series A-1, 7.20%
           due 3/01/2033 (d)(g)                                              86
-------------------------------------------------------------------------------
      410  Lee County, Florida, HFA, S/F Mortgage Revenue
           Refunding Bonds, AMT, Series A-2, 6.30%
           due 3/01/2029 (d)(e)(g)                                          414
-------------------------------------------------------------------------------
    7,375  Lee County, Florida, School Board, COP, Series A, 5%
           due 8/01/2025 (c)                                              7,825
-------------------------------------------------------------------------------
           Leesburg, Florida, Capital Improvement Revenue
           Bonds (h):
    1,605       5.25% due 10/01/2027                                      1,729
    3,425       5.25% due 10/01/2034                                      3,658
-------------------------------------------------------------------------------
      505  Manatee County, Florida, HFA, S/F Mortgage Revenue
           Refunding Bonds, AMT, Sub-Series 1, 6.25%
           due 11/01/2028 (d)                                               512
-------------------------------------------------------------------------------
    3,675  Marco Island, Florida, Utility System Revenue Bonds,
           5% due 10/01/2033 (a)                                          3,831
-------------------------------------------------------------------------------
    5,990  Martin County, Florida, Utilities System Revenue Bonds,
           5.125% due 10/01/2033 (b)                                      6,292
-------------------------------------------------------------------------------
           Miami Beach, Florida, Stormwater Revenue Bonds (h):
    1,630       5.75% due 9/01/2016                                       1,769
    1,000       5.25% due 9/01/2020                                       1,063
    4,400       5.25% due 9/01/2025                                       4,641
    1,910       5.375% due 9/01/2030                                      2,021
-------------------------------------------------------------------------------
           Miami Beach, Florida, Water and Sewer Revenue
           Bonds (b):
    2,690       5.625% due 9/01/2018                                      2,901
   10,600       5.75% due 9/01/2025                                      11,435
-------------------------------------------------------------------------------
           Miami-Dade County, Florida, Aviation Revenue Bonds,
           AMT, Series A:
    9,180       5% due 10/01/2033 (c)                                     9,412
    6,230       5.125% due 10/01/2035 (c)                                 6,431
    6,000       (Miami International Airport), 6%
                due 10/01/2024 (h)                                        6,522
   10,000       (Miami International Airport), 6%
                due 10/01/2029 (h)                                       10,839
-------------------------------------------------------------------------------
           Miami-Dade County, Florida, Educational Facilities
           Authority Revenue Bonds (University of Miami),
           Series A (b):
    1,000       5.50% due 4/01/2019                                       1,068
   19,425       6% due 4/01/2023                                         21,037
    5,000       5.75% due 4/01/2029                                       5,360
-------------------------------------------------------------------------------
           Miami-Dade County, Florida, Expressway Authority, Toll
           System Revenue Bonds, Series B (h):
    8,995       5.25% due 7/01/2027                                       9,657
   12,640       5% due 7/01/2033                                         13,205
-------------------------------------------------------------------------------
   12,250  Miami-Dade County, Florida, Expressway Authority, Toll
           System Revenue Refunding Bonds, 5.125%
           due 7/01/2025 (h)                                             12,978
-------------------------------------------------------------------------------
    6,705  Miami-Dade County, Florida, GO (Parks Program), 6%
           due 11/01/2024 (h)                                             7,219
-------------------------------------------------------------------------------
    2,185  Miami-Dade County, Florida, HFA, M/F Mortgage
           Revenue Bonds (Marbrisa Apartments Project), AMT,
           Series 2A, 6% due 8/01/2026 (c)                                2,313
-------------------------------------------------------------------------------
           Miami-Dade County, Florida, IDA, IDR (b):
    5,100       (Airis Miami II LLC Project), AMT, 6%
                due 10/15/2019                                            5,470
    3,280       (BAC Funding Corporation Project), Series A,
                5.25% due 10/01/2020                                      3,518
-------------------------------------------------------------------------------
    3,750  Miami-Dade County, Florida, School Board, COP,
           Series A, 5% due 11/01/2022 (b)                                3,990
-------------------------------------------------------------------------------
           Miami-Dade County, Florida, Solid Waste System
           Revenue Bonds:
    2,945       5.50% due 10/01/2015 (c)                                  3,182
    3,105       5.50% due 10/01/2016 (c)                                  3,352
    8,800       5.25% due 10/01/2030 (a)                                  9,485
-------------------------------------------------------------------------------
           Nassau County, Florida, Public Improvement Revenue
           Refunding Bonds (a):
    1,035       5.75% due 5/01/2016                                       1,125
    1,095       5.75% due 5/01/2017                                       1,186
    1,155       5.75% due 5/01/2018                                       1,251
    1,225       5.75% due 5/01/2019                                       1,327
-------------------------------------------------------------------------------
    5,175  Nassau County, Florida, Water and Sewer System
           Revenue Bonds, 5.125% due 9/01/2033 (a)                        5,434
-------------------------------------------------------------------------------
    1,015  Orange County, Florida, HFA, S/F Mortgage Revenue
           Bonds, AMT, 6.85% due 10/01/2027 (d)(g)                        1,016
-------------------------------------------------------------------------------


12              ANNUAL REPORTS                  AUGUST 31, 2006


Schedule of Investments (continued)
                 BlackRock MuniHoldings Florida Insured Fund      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
Florida (continued)
-------------------------------------------------------------------------------
           Orange County, Florida, Health Facilities Authority,
           Hospital Revenue Bonds:
 $  2,900       (Adventist Health System), 6.25% due 11/15/2024       $   3,217
    9,220       (Orlando Regional Healthcare), 6%
                due 12/01/2012 (j)                                       10,340
    5,000       (Orlando Regional Healthcare), Series A, 6.25%
                due 10/01/2018 (a)                                        5,990
-------------------------------------------------------------------------------
    1,300  Orange County, Florida, School Board COP, 5.50%
           due 8/01/2025 (b)                                              1,378
-------------------------------------------------------------------------------
   31,745  Orange County, Florida, Tourist Development, Tax
           Revenue Bonds, 5.75% due 10/01/2009 (b)(j)                    33,728
-------------------------------------------------------------------------------
           Orlando and Orange County, Florida, Expressway
           Authority Revenue Bonds, Series B (b):
    3,250       5% due 7/01/2030                                          3,385
   37,550       5% due 7/01/2035                                         38,989
-------------------------------------------------------------------------------
           Osceola County, Florida, Infrastructure Sales Surplus Tax
           Revenue Bonds (b):
    3,155       5.375% due 10/01/2018                                     3,414
    7,680       5.25% due 10/01/2025                                      8,177
-------------------------------------------------------------------------------
           Osceola County, Florida, Sales Tax Revenue Bonds (h):
    2,065       5.625% due 6/01/2016                                      2,252
    1,605       5.625% due 6/01/2017                                      1,745
    1,075       5.625% due 6/01/2018                                      1,169
-------------------------------------------------------------------------------
    4,240  Osceola County, Florida, School Board, COP, Series A,
           5.25% due 6/01/2027 (b)                                        4,503
-------------------------------------------------------------------------------
    5,560  Osceola County, Florida, Tourist Development Tax
           Revenue Bonds, Series A, 5.50% due 10/01/2027 (h)              5,994
-------------------------------------------------------------------------------
    9,935  Palm Beach County, Florida, GO (Liquidated Acquisition
           Program), Series B, 5.75% due 8/01/2009 (a)(j)                10,615
-------------------------------------------------------------------------------
    6,115  Palm Beach County, Florida, School Board COP,
           Refunding, Series B, 5.375% due 8/01/2017 (b)                  6,579
-------------------------------------------------------------------------------
           Palm Beach County, Florida, School Board, COP, Series A:
    5,070       6% due 8/01/2010 (h)(j)                                   5,553
   13,205       6.25% due 8/01/2010 (h)(j)                               14,577
   13,500       5% due 8/01/2031 (c)                                     14,200
-------------------------------------------------------------------------------
    4,000  Palm Coast, Florida, Utility System Revenue Bonds, 5%
           due 10/01/2027 (a)                                             4,169
-------------------------------------------------------------------------------
    3,000  Panama City, Florida, Water and Sewer Revenue Bonds,
           Series B, 5.25% due 10/01/2022 (a)                             3,254
-------------------------------------------------------------------------------
    2,070  Pembroke Pines, Florida, Public Improvement Revenue
           Bonds, Series A, 5% due 10/01/2034 (b)                         2,163
-------------------------------------------------------------------------------
           Polk County, Florida, Public Facilities Revenue Bonds
           (a):
    3,195       5% due 12/01/2025                                         3,387
    4,940       5% due 12/01/2033                                         5,186
-------------------------------------------------------------------------------
    9,885  Polk County, Florida, School Board COP, Master Lease,
           Series A, 5.50% due 1/01/2025 (c)                             10,569
-------------------------------------------------------------------------------
           Port St. Lucie, Florida, Utility Revenue Bonds (a):
    1,280       5.25% due 9/01/2026                                       1,388
    1,345       5.25% due 9/01/2027                                       1,448
-------------------------------------------------------------------------------
           Port St. Lucie, Florida, Utility System Revenue Refunding
           Bonds, Series A (a):
    5,000       5% due 9/01/2028                                          5,282
    5,335       5% due 9/01/2029                                          5,636
-------------------------------------------------------------------------------
           Saint Johns County, Florida, IDA, IDR, Refunding
           (Professional Golf Project) (a):
    1,275       5.50% due 9/01/2015                                       1,387
    1,345       5.50% due 9/01/2016                                       1,462
    1,420       5.50% due 9/01/2017                                       1,534
    1,500       5.50% due 9/01/2018                                       1,621
-------------------------------------------------------------------------------
           Saint Johns County, Florida, Ponte Vedra Utility System
           Revenue Bonds (c):
    2,945       5% due 10/01/2030                                         3,101
    1,680       5% due 10/01/2035                                         1,761
-------------------------------------------------------------------------------
           Saint Johns County, Florida, Sales Tax Revenue Bonds (b):
    1,375       Series A, 5.25% due 10/01/2028                            1,474
    1,355       Series A, 5.25% due 10/01/2031                            1,447
    2,000       Series A, 5.25% due 10/01/2034                            2,131
    1,430       Series B, 5.25% due 10/01/2027                            1,536
      840       Series B, 5.25% due 10/01/2032                              896
-------------------------------------------------------------------------------
    3,500  Saint Johns County, Florida, Transportation Improvement
           Revenue Bonds, 5.125% due 10/01/2032 (b)                       3,678
-------------------------------------------------------------------------------
    4,055  Saint Lucie County, Florida, School Board, COP, 6.25%
           due 7/01/2010 (c)(j)                                           4,472
-------------------------------------------------------------------------------
           Saint Lucie County, Florida, School Board COP,
           Refunding (c):
    1,495       Series A, 5.50% due 7/01/2018                             1,612
    1,170       Series C, 5.50% due 7/01/2018                             1,262
-------------------------------------------------------------------------------
           Saint Lucie, Florida, West Services District, Utility
           Revenue Bonds (a):
    1,720       5.25% due 10/01/2034                                      1,849
    4,750       5% due 10/01/2038                                         4,972
-------------------------------------------------------------------------------
    3,250  Saint Lucie, Florida, West Services District, Utility
           Revenue Refunding Bonds, Senior Lien, 6%
           due 10/01/2022 (a)                                             3,577
-------------------------------------------------------------------------------
    4,395  Santa Rosa County, Florida, School Board, COP, DRIVERS,
           Series 1293Z, 6.773% due 2/01/2014 (f)(h)                      5,061
-------------------------------------------------------------------------------
    1,750  South Lake County, Florida, Hospital District Revenue
           Bonds (South Lake Hospital Inc.), 5.80% due 10/01/2034         1,823
-------------------------------------------------------------------------------
    2,250  Sunrise, Florida, Utility System Revenue Refunding
           Bonds, 5.20% due 10/01/2022 (b)                                2,498
-------------------------------------------------------------------------------
    2,430  Sunrise Lakes, Florida, Phase 4 Recreation District,
           Refunding Bonds, GO, 5.25% due 8/01/2024 (b)                   2,483
-------------------------------------------------------------------------------


                ANNUAL REPORTS                  AUGUST 31, 2006               13


Schedule of Investments (concluded)
                 BlackRock MuniHoldings Florida Insured Fund      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
Florida (concluded)
-------------------------------------------------------------------------------
           Tallahassee, Florida, Lease Revenue Bonds (Florida State
           University Project), Series A (a):
 $  2,800       5.25% due 8/01/2023                                   $   2,936
    1,000       5.375% due 8/01/2026                                      1,057
-------------------------------------------------------------------------------
   30,335  Tampa Bay, Florida, Water Utility System Revenue Bonds,
           6% due 10/01/2011 (h)(j)                                      33,644
-------------------------------------------------------------------------------
   14,750  Tampa, Florida, Sports Authority Revenue Bonds (Local
           Option Sales Tax--Stadium Project), 5.25%
           due 1/01/2007 (a)(j)                                          14,979
-------------------------------------------------------------------------------
    3,835  Taylor County, Florida, Sales Tax Revenue Bonds, 6%
           due 10/01/2010 (h)(j)                                          4,183
-------------------------------------------------------------------------------
    8,935  University of Central Florida (UCF) Athletics Association
           Inc., COP, Series A, 5.25% due 10/01/2034 (h)                  9,468
-------------------------------------------------------------------------------
           Village Center Community Development District, Florida,
           Recreational Revenue Bonds, Series A (a):
   10,775       5.375% due 11/01/2034                                    11,674
    1,750       5.125% due 11/01/2036                                     1,850
-------------------------------------------------------------------------------
    3,000  Village Center Community Development District, Florida,
           Utility Revenue Bonds, 5.25% due 10/01/2023 (a)                3,242
-------------------------------------------------------------------------------
           Volusia County, Florida, IDA, Student Housing Revenue
           Bonds (Stetson University Project), Series A (l):
    2,075       5% due 6/01/2025                                          2,197
    1,740       5% due 6/01/2035                                          1,822
===============================================================================
Georgia--1.8%
-------------------------------------------------------------------------------
    9,700  Atlanta, Georgia, Airport Passenger Facility Charge and
           Subordinate Lien General Revenue Refunding Bonds,
           Series C, 5% due 1/01/2033 (c)                                10,062
===============================================================================
Michigan--1.9%
-------------------------------------------------------------------------------
   10,250  Detroit, Michigan, Sewage Disposal System, Second
           Lien Revenue Bonds, Series B, 5% due 7/01/2036 (h)            10,728
===============================================================================
Puerto Rico--1.0%
-------------------------------------------------------------------------------
    2,600  Puerto Rico Commonwealth, Public Improvement, GO,
           Series A, 5.25% due 7/01/2026                                  2,770
-------------------------------------------------------------------------------
    2,725  Puerto Rico Industrial, Tourist, Educational, Medical and
           Environmental Control Facilities Revenue Bonds
           (University Plaza Project), Series A, 5.625%
           due 7/01/2019 (a)                                              2,916
-------------------------------------------------------------------------------
           Total Municipal Bonds
           (Cost--$846,041)--159.6%                                     886,390
===============================================================================

   Shares
     Held  Short-Term Securities
===============================================================================
   15,670  CMA Florida Municipal Money Fund, 2.92% (m)(o)                15,670
-------------------------------------------------------------------------------
           Total Short-Term Securities
           (Cost--$15,670)--2.8%                                         15,670
===============================================================================
Total Investments (Cost--$861,711*)--162.4%                             902,060

Other Assets Less Liabilities--3.0%                                      16,812

Preferred Shares, at Redemption Value--(65.4%)                         (363,378)
                                                                      ---------
Net Assets Applicable to Common Shares--100.0%                        $ 555,494
                                                                      =========

*     The cost and unrealized appreciation (depreciation) of investments as of
      August 31, 2006, as computed for federal income tax purposes, were as
      follows:

      Aggregate cost ...............................................  $ 862,322
                                                                      =========
      Gross unrealized appreciation ................................  $  39,874
      Gross unrealized depreciation ................................       (136)
                                                                      ---------
      Net unrealized appreciation ..................................  $  39,738
                                                                      =========

(a)   MBIA Insured.
(b)   AMBAC Insured.
(c)   FSA Insured.
(d)   GNMA Collateralized.
(e)   FHLMC Collateralized.
(f)   The rate disclosed is that currently in effect. This rate changes
      periodically and inversely based upon prevailing market rates.
(g)   FNMA Collateralized.
(h)   FGIC Insured.
(i)   FHA Insured.
(j)   Prerefunded.
(k)   Radian Insured.
(l)   CIFG Insured.
(m)   Investments in companies considered to be an affiliate of the Fund, for
      purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as
      follows:

      --------------------------------------------------------------------------
                                                            Net         Dividend
      Affiliate                                          Activity        Income
      --------------------------------------------------------------------------
      CMA Florida Municipal Money Fund                    15,670        $    278
      Merrill Lynch Institutional Tax-Exempt Fund         (2,535)       $     53
      --------------------------------------------------------------------------

(n)   Assured Guaranty Insured.
(o)   Represents the current yield as of August 31, 2006.

      See Notes to Financial Statements.


14              ANNUAL REPORTS                  AUGUST 31, 2006


Schedule of Investments
          BlackRock MuniHoldings New York Insured Fund, Inc.      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
New York--150.3%
-------------------------------------------------------------------------------
           Albany County, New York, Airport Authority, Airport
           Revenue Bonds, AMT (g):
 $  1,500       5.375% due 12/15/2017                                 $   1,554
    1,500       5.50% due 12/15/2019                                      1,558
    5,200       6% due 12/15/2023 (o)                                     5,445
-------------------------------------------------------------------------------
    3,375  Albany, New York, IDA, Civic Facility Revenue Bonds
           (The University Heights Association--Albany Law
           School), Series A, 6.75% due 12/01/2029 (k)                    3,690
-------------------------------------------------------------------------------
    1,000  Albany, New York, Municipal Water Finance Authority,
           Water and Sewer System Revenue Refunding Bonds,
           Series A, 6.375% due 12/01/2009 (e)(j)                         1,095
-------------------------------------------------------------------------------
    2,000  Buffalo, New York, GO, Series D, 6% due 12/01/2009 (j)         2,168
-------------------------------------------------------------------------------
    1,025  Erie County, New York, GO, Public Improvement,
           Series A, 5.75% due 10/01/2013 (e)                             1,097
-------------------------------------------------------------------------------
           Erie County, New York, IDA, School Facility Revenue
           Bonds (City of Buffalo Project) (g):
    2,500       5.75% due 5/01/2019                                       2,752
    5,150       5.75% due 5/01/2024                                       5,509
-------------------------------------------------------------------------------
           Long Island Power Authority, New York, Electric System
           Revenue Bonds:
    3,000       Series A, 5% due 9/01/2029 (a)                            3,145
    5,950       Series A, 5% due 9/01/2034 (a)                            6,210
    5,000       Series C, 5% due 9/01/2035                                5,212
-------------------------------------------------------------------------------
    5,750  Long Island Power Authority, New York, Electric System
           Revenue Refunding Bonds, Series B, 5% due 12/01/2035 (c)       6,021
-------------------------------------------------------------------------------
    3,750  Madison County, New York, IDA, Civic Facility Revenue
           Bonds (Colgate University Project), Series A, 5%
           due 7/01/2035 (a)                                              3,933
-------------------------------------------------------------------------------
           Metropolitan Transportation Authority, New York,
           Dedicated Tax Fund Revenue Bonds, Series A:
    5,000       5% due 11/15/2011 (e)(j)                                  5,333
    8,000       5% due 11/15/2035 (i)                                     8,424
-------------------------------------------------------------------------------
    1,500  Metropolitan Transportation Authority, New York,
           Dedicated Tax Fund, Revenue Refunding Bonds, VRDN,
           Series B, 3.33% due 11/01/2022 (g)(l)                          1,500
-------------------------------------------------------------------------------
           Metropolitan Transportation Authority, New York,
           Revenue Refunding Bonds:
    3,000       RIB, Series 724X, 7.84% due 11/15/2032 (g)(m)             3,606
   14,515       Series A, 5% due 11/15/2030 (g)                          15,140
    2,500       Series A, 5.25% due 11/15/2031 (e)                        2,671
   29,000       Series A, 5.75% due 11/15/2032 (g)                       31,930
    1,500       Series B, 5% due 11/15/2028 (i)                           1,568
-------------------------------------------------------------------------------
           Metropolitan Transportation Authority, New York,
           Service Contract Revenue Refunding Bonds Series A (e):
    3,500       5% due 7/01/2021                                          3,705
    2,000       5% due 7/01/2025                                          2,100
-------------------------------------------------------------------------------
           Metropolitan Transportation Authority, New York,
           Transit Facilities Revenue Bonds (j):
    2,535       Series C, 4.75% due 7/01/2012 (g)                         2,687
    1,000       Series C-1, 5.50% due 7/01/2008 (i)                       1,040
-------------------------------------------------------------------------------
    2,500  Metropolitan Transportation Authority, New York,
           Transportation Revenue Bonds, Series A, 5%
           due 11/15/2032 (e)                                             2,601
-------------------------------------------------------------------------------
    6,300  Metropolitan Transportation Authority, New York,
           Transportation Revenue Refunding Bonds, Series F,
           5.25% due 11/15/2027 (i)                                       6,732
-------------------------------------------------------------------------------
    1,160  Montgomery County, New York, IDA, Lease Revenue
           Bonds (Hamilton Fulton Montgomery Board of
           Cooperative Educational Services Project), Series A,
           5% due 7/01/2034 (n)                                           1,204
-------------------------------------------------------------------------------
    4,210  Nassau Health Care Corporation, New York, Health
           System Revenue Bonds, 5.75% due 8/01/2009 (g)(j)               4,544
-------------------------------------------------------------------------------
    2,000  New York City, New York, City Health and Hospital
           Corporation, Health System Revenue Refunding Bonds,
           Series A, 5.25% due 2/15/2017 (i)                              2,091
-------------------------------------------------------------------------------
           New York City, New York, City Housing Development
           Corporation, M/F Housing Revenue Bonds, AMT:
    1,250       Series C, 5% due 11/01/2026                               1,279
    2,000       Series C, 5.05% due 11/01/2036                            2,065
    2,340       Series H-2, 5.125% due 11/01/2034                         2,380
-------------------------------------------------------------------------------
      885  New York City, New York, City IDA, Civic Facility
           Revenue Bonds (Anti-Defamation League Foundation),
           Series A, 5.50% due 6/01/2022 (i)                                915
-------------------------------------------------------------------------------
    1,200  New York City, New York, City IDA, Civic Facility
           Revenue Refunding Bonds (Nightingale-Bamford
           School), 5.25% due 1/15/2017 (a)                               1,293
-------------------------------------------------------------------------------
   12,700  New York City, New York, City IDA, IDR (Japan Airlines
           Company), AMT, 6% due 11/01/2015 (g)                          12,871
-------------------------------------------------------------------------------
           New York City, New York, City IDA, PILOT Revenue Bonds:
    5,250       (Queens Baseball Stadium Project), 5%
                due 1/01/2036 (a)                                         5,531
    4,250       (Yankee Stadium Project), 5% due 3/01/2036 (i)            4,472
   11,000       (Yankee Stadium Project), 4.50% due 3/01/2039 (e)        10,937
    3,250       (Yankee Stadium Project), 5% due 3/01/2046 (e)            3,394
-------------------------------------------------------------------------------
    7,965  New York City, New York, City IDA, Parking Facility
           Revenue Bonds (Royal Charter--New York Presbyterian),
           5.75% due 12/15/2029 (g)                                       8,804
-------------------------------------------------------------------------------
    1,500  New York City, New York, City IDA, Special Facility
           Revenue Refunding Bonds (Terminal One Group
           Association Project), AMT, 5.50% due 1/01/2024                 1,613
-------------------------------------------------------------------------------
    6,720  New York City, New York, City Municipal Financing
           Authority, Water and Sewer Systems Revenue Bonds,
           5% due 6/15/2036 (i)                                           7,059
-------------------------------------------------------------------------------
      500  New York City, New York, City Municipal Water Finance
           Authority, Water and Sewer System, Crossover Revenue
           Refunding Bonds, Series F, 5% due 6/15/2029 (g)                  515
-------------------------------------------------------------------------------
           New York City, New York, City Municipal Water Finance
           Authority, Water and Sewer System Revenue Bonds:
   11,500       RIB, Series 726X, 7.84% due 6/15/2027 (i)(m)             13,595
    2,850       Series A, 5.75% due 6/15/2009 (e)(j)                      3,044
    8,500       Series B, 5.75% due 6/15/2007 (i)(j)                      8,733
    1,600       VRDN, Series C, 3.56% due 6/15/2023 (e)(l)                1,600
-------------------------------------------------------------------------------


                ANNUAL REPORTS                  AUGUST 31, 2006               15


Schedule of Investments (continued)
          BlackRock MuniHoldings New York Insured Fund, Inc.      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
New York (continued)
-------------------------------------------------------------------------------
           New York City, New York, City Municipal Water Finance
           Authority, Water and Sewer System, Revenue
           Refunding Bonds:
 $  1,250       Series A, 5.125% due 6/15/2034 (i)                    $   1,314
    5,500       Series A, 5% due 6/15/2035 (a)                            5,705
    2,400       Series B, 5% due 6/15/2036 (g)                            2,506
    1,750       Series C, 5% due 6/15/2035 (i)                            1,823
-------------------------------------------------------------------------------
    3,900  New York City, New York, City Municipal Water Finance
           Authority, Water and Sewer System Revenue Refunding
           Bonds, VRDN, Series G, 3.35% due 6/15/2024 (e)(l)              3,900
-------------------------------------------------------------------------------
           New York City, New York, City Transitional Finance
           Authority, Future Tax Secured Revenue Bonds:
    1,145       Series B, 5.50% due 2/01/2012 (i)                         1,238
      805       Series B, 5.50% due 2/01/2013 (i)                           870
    6,405       Series B, 6.25% due 11/15/2018 (e)                        7,060
    1,180       Series C, 5.50% due 5/01/2009 (j)                         1,250
   16,200       Series C, 5% due 2/01/2033 (e)                           16,861
    2,500       Series E, 5.25% due 2/01/2022 (i)                         2,675
-------------------------------------------------------------------------------
    1,000  New York City, New York, City Transitional Finance
           Authority, Revenue Refunding Bonds, Series A, 5%
           due 11/15/2026 (e)                                             1,049
-------------------------------------------------------------------------------
           New York City, New York, GO:
    4,750       RIB, Series 725X, 7.84% due 3/15/2027 (g)(m)              5,767
    4,500       Series B, 5.75% due 8/01/2013 (i)                         4,875
    3,750       Series D, 5.25% due 10/15/2023                            4,000
    1,850       Series I, 6.25% due 4/15/2007 (i)(j)                      1,900
    8,000       Series J, 5% due 5/15/2023                                8,369
    1,975       Series J, 5% due 3/01/2030                                2,055
    8,300       Series M, 5% due 4/01/2035                                8,616
    1,150       Sub-Series C-1, 5.25% due 8/15/2026                       1,228
-------------------------------------------------------------------------------
           New York City, New York, GO, Refunding Series A:
      880       6.375% due 5/15/2010 (e)(j)                                 973
    3,700       6.25% due 5/15/2026 (g)                                   4,050
-------------------------------------------------------------------------------
           New York City, New York, Sales Tax Asset Receivable
           Corporation Revenue Bonds (a):
    4,750       DRIVERS, Series 1438Z, 6.474%
                due 10/15/2012 (m)                                        5,417
   11,850       Series A, 5% due 10/15/2032                              12,421
-------------------------------------------------------------------------------
    3,950  New York City, New York, Trust for Cultural Resources,
           Revenue Refunding Bonds (American Museum of Natural
           History), Series A, 5% due 7/01/2036 (i)                       4,135
-------------------------------------------------------------------------------
           New York Convention Center Development Corporation,
           New York, Revenue Bonds (a):
   10,500       DRIVERS, VRDN, Series 1247Z, 6.273%
                due 11/15/2013 (m)                                       11,476
    3,000       (Hotel Unit Fee Secured), 5% due 11/15/2030               3,151
-------------------------------------------------------------------------------
           New York State Dormitory Authority, Hospital Revenue
           Refunding Bonds:
    1,000       (New York Presbyterian Hospital), 5.50%
                due 8/01/2011 (a)(f)                                      1,078
    2,000       (North General Hospital), 5.75% due 2/15/2017 (n)         2,215
-------------------------------------------------------------------------------
           New York State Dormitory Authority, Lease
           Revenue Bonds:
    1,535       (Municipal Health Facilities Improvement Program),
                Series l, 5.50% due 1/15/2014 (g)                         1,651
      645       (Office Facilities Audit and Control), 5.50%
                due 4/01/2023 (i)                                           681
-------------------------------------------------------------------------------
    2,500  New York State Dormitory Authority, Non-State Supported
           Debt, Revenue Refunding Bonds (Cornell University),
           Series A, 5% due 7/01/2035                                     2,629
-------------------------------------------------------------------------------
           New York State Dormitory Authority Revenue Bonds:
    1,340       (853 Schools Program), Issue 2, Series E, 5.75%
                due 7/01/2019 (a)                                         1,428
    1,200       (Cooper Union of Advance Science), 6.25%
                due 7/01/2029 (i)                                         1,293
    2,058       (Gustavus Adolphus Child & Family Services, Inc.),
                Series B, 5.50% due 7/01/2018 (a)                         2,180
    6,750       (Interfaith Medical Center), Series D, 5.40%
                due 2/15/2028 (i)                                         6,999
    1,585       (Long Island University), Series B, 5.50%
                due 9/01/2020 (k)                                         1,707
    1,250       (Long Island University), Series B, 5.25%
                due 9/01/2028 (k)                                         1,319
    1,180       (New York State Rehabilitation Association), Series
                A, 5.25% due 7/01/2019 (c)                                1,271
    1,000       (New York State Rehabilitation Association), Series
                A, 5.125% due 7/01/2023 (c)                               1,050
    5,345       (Pace University), 6% due 7/01/2010 (j)                   5,857
    2,150       (Saint Barnabas Hospital), 5.45%
                due 8/01/2035 (a)(f)                                      2,205
    1,240       (School Districts Financing Program), Series D, 5%
                due 10/01/2030 (i)                                        1,286
    6,900       (School Districts Financing Program), Series E,
                5.75% due 10/01/2030 (i)                                  7,585
    1,405       (Upstate Community Colleges), Series A, 6%
                due 7/01/2010 (g)(j)                                      1,540
-------------------------------------------------------------------------------
           New York State Dormitory Authority Revenue
           Refunding Bonds:
    3,700       (Bronx-Lebanon Hospital Center), Series E, 5.20%
                due 2/15/2013 (i)                                         3,823
    1,865       (City University System), Series 1, 5.25%
                due 7/01/2014 (e)                                         1,939
    3,400       (Saint Charles Hospital and Rehabilitation Center),
                Series A, 5.625% due 7/01/2012 (i)                        3,601
    1,370       (School District Financing Program), Series I,
                5.75% due 10/01/2018 (i)                                  1,517
    4,485       Series B, 5.50% due 8/15/2017 (i)                         4,610
-------------------------------------------------------------------------------


16              ANNUAL REPORTS                  AUGUST 31, 2006


Schedule of Investments (continued)
          BlackRock MuniHoldings New York Insured Fund, Inc.      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
New York (continued)
-------------------------------------------------------------------------------
 $  6,250  New York State Dormitory Authority, State University
           Educational Facilities Revenue Refunding Bonds (1989
           Resources), 6% due 5/15/2012 (i)                           $   6,813
-------------------------------------------------------------------------------
           New York State Dormitory Authority, Supported Debt
           Revenue Bonds:
    1,550       (Mental Health Facilities), Series B, 5.25%
                due 2/15/2014 (j)                                         1,703
      285       (Mental Health Facilities), Series B, 5.25%
                due 2/15/2023                                               305
    1,060       (Mental Health Facilities), Series D, 5.875%
                due 8/15/2010 (g)(j)                                      1,150
    7,000       (State University Dormitory Facilities), Series A,
                5% due 7/01/2031 (i)                                      7,383
-------------------------------------------------------------------------------
    1,000  New York State Dormitory Authority, Supported Debt
           Revenue Refunding Bonds (Department of Health),
           Series A, 5% due 7/01/2025 (c)                                 1,052
-------------------------------------------------------------------------------
   12,960  New York State Energy Research and Development
           Authority, Gas Facilities Revenue Refunding Bonds
           (Brooklyn Union Gas Company/Keyspan), AMT, Series A,
           4.70% due 2/01/2024 (e)                                       13,119
-------------------------------------------------------------------------------
    6,000  New York State Energy Research and Development
           Authority, PCR, Refunding (Central Hudson Gas and
           Electric), Series A, 5.45% due 8/01/2027 (a)                   6,324
-------------------------------------------------------------------------------
    6,000  New York State Environmental Facilities Corporation,
           Water Facilities Revenue Bonds (Long Island Water Corp.
           Project), AMT, Series A, 4.90% due 10/01/2034 (i)              6,092
-------------------------------------------------------------------------------
    4,400  New York State Environmental Facilities Corporation,
           Water Facilities Revenue Refunding Bonds (Spring Valley
           Water Company), Series B, 6.15% due 8/01/2024 (a)              4,410
-------------------------------------------------------------------------------
      750  New York State Housing Finance Agency, State Personal
           Income Tax Revenue Bonds (Economic Development and
           Housing), Series A, 5% due 9/15/2023 (i)                         790
-------------------------------------------------------------------------------
    1,500  New York State Housing Finance Agency, State Personal
           Income Tax, Revenue Refunding Bonds (Economic
           Development and Housing), Series A, 5%
           due 9/15/2034 (e)                                              1,567
-------------------------------------------------------------------------------
    6,800  New York State Medical Care Facilities Finance Agency,
           Revenue Bonds (Montefiore Medical Center), Series A,
           5.75% due 2/15/2025 (a)(f)                                     6,800
-------------------------------------------------------------------------------
    1,750  New York State Mortgage Agency, Homeowner Mortgage
           Revenue Bonds, AMT, Series 130, 4.80% due 10/01/2037           1,753
-------------------------------------------------------------------------------
           New York State Mortgage Agency, Homeowner Mortgage
           Revenue Refunding Bonds, AMT:
    2,140       Series 67, 5.70% due 10/01/2017 (i)                       2,192
    2,100       Series 83, 5.55% due 10/01/2027 (i)                       2,160
    1,500       Series 133, 4.95% due 10/01/2021                          1,540
-------------------------------------------------------------------------------
    1,170  New York State Mortgage Agency Revenue Refunding
           Bonds, AMT, Series 82, 5.65% due 4/01/2030 (i)                 1,171
-------------------------------------------------------------------------------
           New York State Municipal Bond Bank Agency, Special School
           Purpose Revenue Bonds, Series C:
    2,000       5.25% due 6/01/2019                                       2,137
    3,900       5.25% due 6/01/2020                                       4,188
-------------------------------------------------------------------------------
    5,000  New York State Thruway Authority, General Revenue
           Bonds, Series F, 5% due 1/01/2030 (a)                          5,243
-------------------------------------------------------------------------------
           New York State Thruway Authority, General Revenue
           Refunding Bonds, Series G (g):
    2,000       4.75% due 1/01/2029                                       2,052
    9,250       4.75% due 1/01/2030                                       9,484
-------------------------------------------------------------------------------
    8,000  New York State Thruway Authority, Highway and Bridge
           Trust Fund Revenue Bonds, Series B-1, 5.75%
           due 4/01/2010 (e)(j)                                           8,661
-------------------------------------------------------------------------------
    8,700  New York State Thruway Authority, Second General
           Highway and Bridge Trust Fund Revenue Bonds, Series A,
           5% due 4/01/2026 (a)                                           9,244
-------------------------------------------------------------------------------
           New York State Urban Development Corporation,
           Personal Income Tax Revenue Bonds:
    3,000       Series C-1, 5% due 3/15/2013 (i)(j)                       3,239
    2,000       (State Facilities), Series A-1, 5% due 3/15/2029 (e)      2,092
-------------------------------------------------------------------------------
    1,000  Niagara Falls, New York, City School District, COP,
           Refunding (High School Facility), 5% due 6/15/2028 (g)         1,045
-------------------------------------------------------------------------------
    1,700  Oneida County, New York, IDA, Civic Facilities Revenue
           Bonds (Mohawk Valley), Series A, 5.20% due 2/01/2013 (g)       1,764
-------------------------------------------------------------------------------
    1,800  Oneida-Herkimer, New York, Solid Waste Management
           Authority, Solid Waste Revenue Refunding Bonds, 5.50%
           due 4/01/2013 (g)                                              1,968
-------------------------------------------------------------------------------
    2,500  Port Authority of New York and New Jersey, Consolidated
           Revenue Bonds, AMT, One Hundred Thirty-Seventh Series,
           5.125% due 7/15/2030 (g)                                       2,628
-------------------------------------------------------------------------------
   12,000  Port Authority of New York and New Jersey Revenue
           Refunding Bonds, AMT, 120th Series, 6%
           due 10/15/2032 (i)                                            12,419
-------------------------------------------------------------------------------
           Port Authority of New York and New Jersey, Special
           Obligation Revenue Bonds (JFK International Air Terminal
           LLC), AMT, Series 6 (i):
   13,365       DRIVERS, AMT, Series 278, 7.736% due 12/01/2022 (m)      14,514
    3,000       6.25% due 12/01/2011                                      3,325
    7,830       6.25% due 12/01/2015                                      9,097
    7,000       5.90% due 12/01/2017                                      7,319
-------------------------------------------------------------------------------
    2,500  Rensselaer, New York, City School District, COP, 5%
           due 6/01/2036 (n)                                              2,622
-------------------------------------------------------------------------------
    2,340  Rome, New York, City School District, GO, 5.50%
           due 6/15/2009 (g)(j)                                           2,484
-------------------------------------------------------------------------------
    5,000  Schenectady, New York, IDA, Civic Facility Revenue
           Bonds (Union College Project), Series A, 5.45%
           due 12/01/2029 (a)                                             5,338
-------------------------------------------------------------------------------


                ANNUAL REPORTS                  AUGUST 31, 2006               17


Schedule of Investments (continued)
          BlackRock MuniHoldings New York Insured Fund, Inc.      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
New York (concluded)
-------------------------------------------------------------------------------
 $  3,000  Schenectady, New York, IDA, Civic Facility Revenue
           Refunding Bonds (Union College Project), Series A,
           5.625% due 7/01/2031 (a)                                   $   3,276
-------------------------------------------------------------------------------
    1,000  Suffolk County, New York, IDA, Civic Facility Revenue
           Refunding Bonds (Dowling College), Series A, 5%
           due 6/01/2036 (d)                                              1,022
-------------------------------------------------------------------------------
    4,355  Suffolk County, New York, IDA, IDR (Keyspan--Port
           Jefferson), AMT, 5.25% due 6/01/2027                           4,520
-------------------------------------------------------------------------------
           Suffolk County, New York, IDA, Solid Waste Disposal
           Facility, Revenue Refunding Bonds (Ogden Martin
           System Huntington Project), AMT (a):
    4,660       6% due 10/01/2010                                         5,047
    5,000       6.15% due 10/01/2011                                      5,526
    3,530       6.25% due 10/01/2012                                      3,973
-------------------------------------------------------------------------------
    1,300  Suffolk County, New York, Public Improvement, GO,
           Series B, 4.50% due 11/01/2024 (i)                             1,332
-------------------------------------------------------------------------------
           Tobacco Settlement Financing Corporation of New York
           Revenue Bonds:
    5,000       Series A-1, 5.25% due 6/01/2020 (a)                       5,375
   13,275       Series A-1, 5.25% due 6/01/2021 (a)                      14,239
    2,000       Series A-1, 5.25% due 6/01/2022 (a)                       2,142
    3,700       Series C-1, 5.50% due 6/01/2021                           4,003
-------------------------------------------------------------------------------
           Triborough Bridge and Tunnel Authority, New York,
           Revenue Refunding Bonds (i):
   12,000       5.25% due 11/15/2023                                     12,912
    8,315       5% due 11/15/2032                                         8,615
    2,095       Series A, 5% due 1/01/2012 (j)                            2,236
    1,500       Series B, 5% due 11/15/2032                               1,554
-------------------------------------------------------------------------------
           Triborough Bridge and Tunnel Authority, New York,
           Subordinate Revenue Bonds:
    2,465       5% due 11/15/2028 (a)                                     2,577
    6,000       Series A, 5.25% due 11/15/2030 (i)                        6,384
-------------------------------------------------------------------------------
    7,000  Westchester County, New York, IDA, Civic Facility
           Revenue Bonds (Purchase College Foundation Housing
           Project), Series A, 5.75% due 12/01/2031 (a)                   7,734
-------------------------------------------------------------------------------
    1,795  Yonkers, New York, GO, Series A, 5.75%
           due 10/01/2010 (e)(j)                                          1,959
===============================================================================
Guam--1.1%
-------------------------------------------------------------------------------
           A.B. Won Guam International Airport Authority, General
           Revenue Refunding Bonds, AMT, Series C (i):
    3,700       5.25% due 10/01/2021                                      3,874
    1,050       5.25% due 10/01/2022                                      1,099
===============================================================================
Puerto Rico--14.0%
-------------------------------------------------------------------------------
           Puerto Rico Commonwealth Highway and Transportation
           Authority, Transportation Revenue Bonds:
    4,800       5.25% due 7/01/2017 (e)                                   5,200
    1,250       Receipts, Class R, Series B, 7.964%
                due 7/01/2035 (i)(m)                                      1,474
-------------------------------------------------------------------------------
           Puerto Rico Commonwealth Highway and Transportation
           Authority, Transportation Revenue Refunding Bonds:
   10,000       Series D, 5.75% due 7/01/2012 (j)                        11,088
    2,000       Series K, 5% due 7/01/2035 (b)                            2,102
    3,750       Series L, 5.25% due 7/01/2041 (c)                         4,300
-------------------------------------------------------------------------------
    4,500  Puerto Rico Commonwealth Infrastructure Financing
           Authority, Special Tax Revenue Bonds, Series B, 5%
           due 7/01/2041 (c)                                              4,695
-------------------------------------------------------------------------------
           Puerto Rico Commonwealth Infrastructure Financing
           Authority, Special Tax and Capital Appreciation Revenue
           Bonds, Series A (q):
   10,280       4.62% due 7/01/2031 (e)                                   3,297
    5,500       4.66% due 7/01/2033 (e)                                   1,605
    9,300       4.66% due 7/01/2034 (a)                                   2,586
    2,200       4.67% due 7/01/2037 (a)                                     529
-------------------------------------------------------------------------------
    1,345  Puerto Rico Commonwealth, Public Improvement, GO,
           Refunding, Series B, 5.25% due 7/01/2032                       1,423
-------------------------------------------------------------------------------
      500  Puerto Rico Commonwealth, Public Improvement, GO,
           Series A, 5.25% due 7/01/2030                                    530
-------------------------------------------------------------------------------
    3,570  Puerto Rico Convention Center District Authority, Hotel
           Occupancy Tax Revenue Bonds, Series A, 5%
           due 7/01/2031 (a)                                              3,786
-------------------------------------------------------------------------------


18              ANNUAL REPORTS                  AUGUST 31, 2006


Schedule of Investments (concluded)
          BlackRock MuniHoldings New York Insured Fund, Inc.      (in Thousands)

     Face
   Amount  Municipal Bonds                                              Value
===============================================================================
Puerto Rico (concluded)
-------------------------------------------------------------------------------
           Puerto Rico Electric Power Authority, Power
           Revenue Bonds:
 $  4,750       Series NN, 5.125% due 7/01/2029                       $   4,982
    4,850       Series RR, 5% due 7/01/2029 (c)                           5,119
    4,950       Series RR, 5% due 7/01/2030 (n)                           5,217
    6,360       Series RR, 5% due 7/01/2035 (e)                           6,698
-------------------------------------------------------------------------------
           Total Municipal Bonds
           (Cost--$735,075)--165.4%                                     761,730
===============================================================================

   Shares
     Held  Short-Term Securities
===============================================================================
      134  CMA New York Municipal Money Fund,
           3.07% (h)(p)                                                     134
-------------------------------------------------------------------------------
           Total Short-Term Securities
           (Cost--$134)--0.0%                                               134
===============================================================================
Total Investments (Cost--$735,209*)--165.4%                             761,864

Other Assets Less Liabilities--2.6%                                      11,857

Preferred Stock, at Redemption Value--(68.0%)                          (313,083)
                                                                      ---------
Net Assets Applicable to Common Stock--100.0%                         $ 460,638
                                                                      =========

*     The cost and unrealized appreciation (depreciation) of investments as of
      August 31, 2006, as computed for federal income tax purposes, were as
      follows:

      Aggregate cost ...............................................  $ 735,069
                                                                      =========
      Gross unrealized appreciation ................................  $  27,051
      Gross unrealized depreciation ................................       (256)
                                                                      ---------
      Net unrealized appreciation ..................................  $  26,795
                                                                      =========

(a)   AMBAC Insured.
(b)   Assured Guaranty Insured.
(c)   CIFG Insured.
(d)   ACA Insured.
(e)   FGIC Insured.
(f)   FHA Insured.
(g)   FSA Insured.
(h)   Investments in companies considered to be an affiliate of the Fund, for
      purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as
      follows:

      --------------------------------------------------------------------------
                                                        Net             Dividend
      Affiliate                                      Activity            Income
      --------------------------------------------------------------------------
      CMA New York Municipal Money Fund                 91              $     91
      --------------------------------------------------------------------------

(i)   MBIA Insured.
(j)   Prerefunded.
(k)   Radian Insured.
(l)   Security may have a maturity of more than one year at time of issuance,
      but has variable rate and demand features that qualify it as a short-term
      security. The rate disclosed is that currently in effect. This rate
      changes periodically based upon prevailing market rates.
(m)   The rate disclosed is that currently in effect. This rate changes
      periodically and inversely based upon prevailing market rates.
(n)   XL Capital Insured.
(o)   All or a portion of security held as collateral in connection with open
      financial futures contracts.
(p)   Represents the current yield as of August 31, 2006.
(q)   Represents a zero coupon bond; the interest rate shown reflects the
      effective yield at the time of purchase.
o     Financial futures contracts sold as of August 31, 2006 were as follows:

      --------------------------------------------------------------------------
      Number of                      Expiration         Face         Unrealized
      Contracts       Issue             Date            Value       Depreciation
      --------------------------------------------------------------------------
         183      30-Year U.S.       September
                  Treasury Bonds        2006           $20,004            ($252)
      --------------------------------------------------------------------------

      See Notes to Financial Statements.


                ANNUAL REPORTS                  AUGUST 31, 2006               19


Statements of Net Assets



                                                                                                      BlackRock         BlackRock
                                                                                                     MuniHoldings      MuniHoldings
                                                                                                       Florida           New York
                                                                                                       Insured            Insured
As of August 31, 2006                                                                                    Fund            Fund, Inc.
===================================================================================================================================
Assets
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                                
            Investments in unaffiliated securities, at value* ..................................    $ 886,390,376     $ 761,730,044
            Investments in affiliated securities, at value** ...................................       15,670,135           133,974
            Cash ...............................................................................           84,466            89,429
            Interest receivable ................................................................       13,758,822         9,360,663
            Receivable for securities sold .....................................................        3,603,203         3,012,195
            Prepaid expenses ...................................................................            7,606             7,294
                                                                                                    -------------------------------
            Total assets .......................................................................      919,514,608       774,333,599
                                                                                                    -------------------------------
===================================================================================================================================
Liabilities
-----------------------------------------------------------------------------------------------------------------------------------
            Payable to investment adviser ......................................................          313,119           263,706
            Payable for securities purchased ...................................................           87,835                --
            Payable for other affiliates .......................................................            7,475             6,280
            Variation margin payable ...........................................................               --            68,625
            Dividends payable to Common Shareholders/Common Stock shareholders .................           93,582           142,291
            Accrued expenses ...................................................................          141,013           131,198
                                                                                                    -------------------------------
            Total liabilities ..................................................................          643,024           612,100
                                                                                                    -------------------------------
===================================================================================================================================
Preferred Shares/Stock
-----------------------------------------------------------------------------------------------------------------------------------
            Preferred Shares/Stock, at redemption value, par value $.10 per share of AMPS@ at
             $25,000 per share liquidation preference*** .......................................      363,377,738       313,083,168
                                                                                                    -------------------------------
===================================================================================================================================
Net Assets Applicable to Common Shares/Stock
-----------------------------------------------------------------------------------------------------------------------------------
            Net assets applicable to Common Shares/Stock .......................................    $ 555,493,846     $ 460,638,331
                                                                                                    ===============================
===================================================================================================================================
Analysis of Net Assets Applicable to Common Shares/Stock
-----------------------------------------------------------------------------------------------------------------------------------
            Undistributed investment income--net ...............................................    $   3,015,013     $   2,292,082
            Accumulated realized capital losses--net ...........................................      (62,721,273)      (46,198,429)
            Unrealized appreciation--net .......................................................       40,349,402        26,402,809
                                                                                                    -------------------------------
            Total accumulated losses--net                                                             (19,356,858)      (17,503,538)
                                                                                                    -------------------------------
            Common Shares/Stock, par value $.10 per share+ .....................................        3,766,766         3,079,514
            Paid-in capital in excess of par ...................................................      571,083,938       475,062,355
                                                                                                    -------------------------------
            Net Assets .........................................................................    $ 555,493,846     $ 460,638,331
                                                                                                    ===============================



20              ANNUAL REPORTS                  AUGUST 31, 2006


Statements of Net Assets (concluded)



                                                                                                      BlackRock         BlackRock
                                                                                                    MuniHoldings       MuniHoldings
                                                                                                       Florida           New York
                                                                                                       Insured           Insured
As of August 31, 2006                                                                                   Fund            Fund, Inc.
===================================================================================================================================
Net Assets Value
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                                
            Net assets value per share of Common Shares/Stock ..................................    $       14.75     $       14.96
                                                                                                    ===============================
            Market price .......................................................................    $       14.37     $       14.62
                                                                                                    ===============================
               * Identified cost for unaffiliated securities ...................................    $ 846,040,974     $ 735,075,149
                                                                                                    ===============================
              ** Identified cost for affiliated securities .....................................    $  15,670,135     $     133,974
                                                                                                    ===============================
             *** Preferred Shares/Stock authorized, issued and outstanding:
                    Series A Shares/Stock ......................................................            2,095             1,900
                                                                                                    ===============================
                    Series B Shares/Stock ......................................................            3,495             1,900
                                                                                                    ===============================
                    Series C Shares/Stock ......................................................            3,440             3,040
                                                                                                    ===============================
                    Series D Shares/Stock ......................................................            2,160             3,680
                                                                                                    ===============================
                    Series E Shares/Stock ......................................................            3,340             2,000
                                                                                                    ===============================
               + Common Shares/Stock issued and outstanding ....................................       37,667,658        30,795,138
                                                                                                    ===============================


@     Auction Market Preferred Shares/Stock.

      See Notes to Financial Statements.


                ANNUAL REPORTS                  AUGUST 31, 2006               21


Statements of Operations



                                                                                                       BlackRock         BlackRock
                                                                                                     MuniHoldings      MuniHoldings
                                                                                                        Florida          New York
                                                                                                        Insured          Insured
For the Year Ended August 31, 2006                                                                       Fund           Fund, Inc.
===================================================================================================================================
Investment Income
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                                
            Interest and amortization of premium and accretion of discount .....................    $  45,216,280     $  36,987,578
            Dividends from affiliates ..........................................................          330,974            90,857
                                                                                                    -------------------------------
            Total income .......................................................................       45,547,254        37,078,435
                                                                                                    -------------------------------
===================================================================================================================================
Expenses
-----------------------------------------------------------------------------------------------------------------------------------
            Investment advisory fees ...........................................................        5,052,117         4,243,988
            Commission fees ....................................................................          924,007           796,282
            Accounting services ................................................................          263,676           237,013
            Transfer agent fees ................................................................           95,327            90,524
            Professional fees ..................................................................           58,773            55,849
            Custodian fees .....................................................................           46,128            39,749
            Printing and shareholder reports ...................................................           39,861            35,527
            Trustees'/Directors' fees and expenses .............................................           32,905            32,802
            Pricing fees .......................................................................           27,785            28,281
            Listing fees .......................................................................           23,219            18,976
            Other* .............................................................................           41,867            62,658
                                                                                                    -------------------------------
            Total expenses before waiver and reimbursement .....................................        6,605,665         5,641,649
            Waiver and reimbursement of expenses ...............................................         (406,450)         (375,853)
                                                                                                    -------------------------------
            Total expenses after waiver and reimbursement ......................................        6,199,215         5,265,796
                                                                                                    -------------------------------
            Investment income--net .............................................................       39,348,039        31,812,639
                                                                                                    -------------------------------
===================================================================================================================================
Realized & Unrealized Gain (Loss)--Net
-----------------------------------------------------------------------------------------------------------------------------------
            Realized gain (loss) on:
               Investments--net ................................................................        1,924,039          (322,184)
               Futures contracts and/or forward interest rate swaps--net .......................          572,440            15,804
                                                                                                    -------------------------------
            Total realized gain (loss)--net ....................................................        2,496,479          (306,380)
                                                                                                    -------------------------------
            Change in unrealized appreciation/depreciation on:
               Investments--net ................................................................      (21,439,918)      (14,662,008)
               Futures contracts and/or forward interest rate swaps--net .......................          961,415            44,181
                                                                                                    -------------------------------
            Total change in unrealized appreciation/depreciation--net ..........................      (20,478,503)      (14,617,827)
                                                                                                    -------------------------------
            Total realized and unrealized loss--net ............................................      (17,982,024)      (14,924,207)
                                                                                                    -------------------------------
===================================================================================================================================
Dividends to Preferred Shareholders/Preferred Stock Shareholders
-----------------------------------------------------------------------------------------------------------------------------------
            Investment income--net .............................................................      (11,116,657)       (8,834,136)
                                                                                                    -------------------------------
            Net Increase in Net Assets Resulting from Operations ...............................    $  10,249,358     $   8,054,296
                                                                                                    ===============================
               * Recovery of filing fees .......................................................    $      17,239     $       5,130
                                                                                                    ===============================


      See Notes to Financial Statements.


22              ANNUAL REPORTS                  AUGUST 31, 2006


Statements of Changes in Net Assets  BlackRock MuniHoldings Florida Insured Fund



                                                                                                      For the Year Ended August 31,
                                                                                                    -------------------------------
Increase (Decrease) in Net Assets:                                                                       2006              2005
===================================================================================================================================
Operations
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                                
            Investment income--net .............................................................    $  39,348,039     $  41,066,003
            Realized gain (loss)--net ..........................................................        2,496,479        (1,924,948)
            Change in unrealized appreciation/depreciation--net ................................      (20,478,503)        3,311,646
            Dividends to Preferred Shareholders ................................................      (11,116,657)       (6,626,611)
                                                                                                    -------------------------------
            Net increase in net assets resulting from operations ...............................       10,249,358        35,826,090
                                                                                                    -------------------------------
===================================================================================================================================
Dividends to Common Shareholders
-----------------------------------------------------------------------------------------------------------------------------------
            Investment income--net .............................................................      (31,752,842)      (37,933,871)
                                                                                                    -------------------------------
            Net decrease in net assets resulting from dividends to Common Shareholders .........      (31,752,842)      (37,933,871)
                                                                                                    -------------------------------
===================================================================================================================================
Capital Share Transactions
-----------------------------------------------------------------------------------------------------------------------------------
            Value of shares issued to Common Shareholders in reinvestment of dividends .........           66,617           529,463
                                                                                                    -------------------------------
            Net increase in net assets derived from capital share transactions .................           66,617           529,463
                                                                                                    -------------------------------
===================================================================================================================================
Net Assets Applicable to Common Shares
-----------------------------------------------------------------------------------------------------------------------------------
            Total decrease in net assets applicable to Common Shares ...........................      (21,436,867)       (1,578,318)
            Beginning of year ..................................................................      576,930,713       578,509,031
                                                                                                    -------------------------------
            End of year* .......................................................................    $ 555,493,846     $ 576,930,713
                                                                                                    ===============================
               * Undistributed investment income--net ..........................................    $   3,015,013     $   6,553,712
                                                                                                    ===============================


      See Notes to Financial Statements.

                              BlackRock MuniHoldings New York Insured Fund, Inc.



                                                                                                      For the Year Ended August 31,
                                                                                                    -------------------------------
Increase (Decrease) in Net Assets:                                                                       2006              2005
===================================================================================================================================
Operations
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                                
            Investment income--net .............................................................    $  31,812,639     $  31,975,240
            Realized loss--net .................................................................         (306,380)       (2,377,019)
            Change in unrealized appreciation/depreciation--net ................................      (14,617,827)        8,840,346
            Dividends to Preferred Stock shareholders ..........................................       (8,834,136)       (5,197,939)
                                                                                                    -------------------------------
            Net increase in net assets resulting from operations ...............................        8,054,296        33,240,628
                                                                                                    -------------------------------
===================================================================================================================================
Dividends to Common Stock Shareholders
-----------------------------------------------------------------------------------------------------------------------------------
            Investment income--net .............................................................      (25,985,593)      (29,183,815)
                                                                                                    -------------------------------
            Net decrease in net assets resulting from dividends to Common Stock shareholders ...      (25,985,593)      (29,183,815)
                                                                                                    -------------------------------
===================================================================================================================================
Capital Stock Transactions
-----------------------------------------------------------------------------------------------------------------------------------
            Value of shares issued to Common Stock shareholders in reinvestment of dividends ...          156,161                --
                                                                                                    -------------------------------
            Net increase in net assets derived from capital stock transactions .................          156,161                --
                                                                                                    -------------------------------
===================================================================================================================================
Net Assets Applicable to Common Stock
-----------------------------------------------------------------------------------------------------------------------------------
            Total increase (decrease) in net assets applicable to Common Stock .................      (17,775,136)        4,056,813
            Beginning of year ..................................................................      478,413,467       474,356,654
                                                                                                    -------------------------------
            End of year* .......................................................................    $ 460,638,331     $ 478,413,467
                                                                                                    ===============================
               * Undistributed investment income--net ..........................................    $   2,292,082     $   5,288,059
                                                                                                    ===============================


      See Notes to Financial Statements.


                ANNUAL REPORTS                  AUGUST 31, 2006               23


Financial Highlights                 BlackRock MuniHoldings Florida Insured Fund



                                                                                        For the Year Ended August 31,
The following per share data and ratios have been derived                 ---------------------------------------------------------
from information provided in the financial statements.                      2006        2005        2004        2003        2002
===================================================================================================================================
Per Share Operating Performance
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                           
      Net asset value, beginning of year ...............................  $  15.32    $  15.37    $  15.04    $  15.41    $  15.29
                                                                          ---------------------------------------------------------
      Investment income--net ...........................................      1.04+       1.09+       1.11+       1.15+       1.14
      Realized and unrealized gain (loss)--net .........................      (.47)        .05         .31        (.46)        .06
      Less dividends and distributions to Preferred Shareholders:
          Investment income--net .......................................      (.30)       (.18)       (.09)       (.10)       (.13)
          Realized gain--net ...........................................        --          --          --          --          --++
                                                                          ---------------------------------------------------------
      Total from investment operations .................................       .27         .96        1.33         .59        1.07
                                                                          ---------------------------------------------------------
      Less dividends and distributions to Common Shareholders:
          Investment income--net .......................................      (.84)      (1.01)      (1.00)       (.96)       (.95)
          Realized gain--net ...........................................        --          --          --          --          --++
                                                                          ---------------------------------------------------------
      Total dividends and distributions to Common Shareholders .........      (.84)      (1.01)      (1.00)       (.96)       (.95)
                                                                          ---------------------------------------------------------
      Net asset value, end of year .....................................  $  14.75    $  15.32    $  15.37    $  15.04    $  15.41
                                                                          =========================================================
      Market price per share, end of year ..............................  $  14.37    $  15.75    $  14.84    $  14.08    $  14.66
                                                                          =========================================================
===================================================================================================================================
Total Investment Return*
-----------------------------------------------------------------------------------------------------------------------------------
      Based on net asset value per share ...............................      2.10%       6.49%       9.43%       4.17%       7.75%
                                                                          =========================================================
      Based on market price per share ..................................     (3.24%)     13.39%      12.86%       2.51%      11.63%
                                                                          =========================================================
===================================================================================================================================
Ratios Based on Average Net Assets of Common Shares
-----------------------------------------------------------------------------------------------------------------------------------
      Total expenses, net of waiver and reimbursement and excluding
        reorganization expenses** ......................................      1.12%       1.11%       1.10%       1.10%       1.13%
                                                                          =========================================================
      Total expenses, excluding reorganization expenses** ..............      1.19%       1.16%       1.17%       1.17%       1.20%
                                                                          =========================================================
      Total expenses** .................................................      1.19%       1.16%       1.17%       1.17%       1.21%
                                                                          =========================================================
      Total investment income--net** ...................................      7.08%       7.11%       7.23%       7.40%       7.71%
                                                                          =========================================================
      Amount of dividends to Preferred Shareholders ....................      2.00%       1.15%        .60%        .65%        .96%
                                                                          =========================================================
      Investment income--net, to Common Shareholders ...................      5.08%       5.96%       6.63%       6.75%       6.75%
                                                                          =========================================================
===================================================================================================================================
Ratios Based on Average Net Assets of Preferred Shares
-----------------------------------------------------------------------------------------------------------------------------------
      Dividends to Preferred Shareholders ..............................      3.06%       1.82%        .95%       1.06%       1.49%
                                                                          =========================================================
===================================================================================================================================
Supplemental Data
-----------------------------------------------------------------------------------------------------------------------------------
      Net assets applicable to Common Shares, end of year (in thousands)  $555,494    $576,931    $578,509    $565,993    $580,003
                                                                          =========================================================
      Preferred Shares outstanding, end of year (in thousands) .........  $363,250    $363,250    $363,250    $363,250    $363,250
                                                                          =========================================================
      Portfolio turnover ...............................................     45.72%      26.50%      21.20%      27.40%      13.89%
                                                                          =========================================================
===================================================================================================================================
Leverage
-----------------------------------------------------------------------------------------------------------------------------------
      Asset coverage per $1,000 ........................................  $  2,529    $  2,588    $  2,593    $  2,558    $  2,597
                                                                          =========================================================
===================================================================================================================================
Dividends Per Share on Preferred Shares Outstanding
-----------------------------------------------------------------------------------------------------------------------------------
      Series A--Investment income--net .................................  $    755    $    441    $    233    $    252    $    362
                                                                          =========================================================
      Series B--Investment income--net .................................  $    778    $    451    $    237    $    267    $    375
                                                                          =========================================================
      Series C--Investment income--net .................................  $    780    $    461    $    237    $    252    $    369
                                                                          =========================================================
      Series D--Investment income--net .................................  $    743    $    462    $    243    $    273    $    368
                                                                          =========================================================
      Series E--Investment income--net .................................  $    757    $    463    $    241    $    276    $    381
                                                                          =========================================================


*     Total investment returns based on market value, which can be significantly
      greater or lesser than the net asset value, may result in substantially
      different returns. Total investment returns exclude the effects of sales
      charges.
**    Do not reflect the effect of dividends to Preferred Shareholders.
+     Based on average shares outstanding.
++    Amount is less than $(.01) per share.

      See Notes to Financial Statements.


24              ANNUAL REPORTS                  AUGUST 31, 2006


Financial Highlights          BlackRock MuniHoldings New York Insured Fund, Inc.



                                                                                        For the Year Ended August 31,
The following per share data and ratios have been derived                 ---------------------------------------------------------
from information provided in the financial statements.                      2006        2005        2004        2003        2002
===================================================================================================================================
Per Share Operating Performance
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                           
      Net asset value, beginning of year ...............................  $  15.54    $  15.41    $  15.19    $  15.66    $  15.78
                                                                          ---------------------------------------------------------
      Investment income--net** .........................................      1.03        1.04        1.05        1.09        1.07
      Realized and unrealized gain (loss)--net .........................      (.48)        .21         .18        (.58)       (.19)
      Less dividends to Preferred Stock shareholders from investment
        income--net ....................................................      (.29)       (.17)       (.08)       (.08)       (.12)
                                                                          ---------------------------------------------------------
      Total from investment operations .................................       .26        1.08        1.15         .43         .76
                                                                          ---------------------------------------------------------
      Less dividends to Common Stock shareholders from
        investment income--net .........................................      (.84)       (.95)       (.93)       (.90)       (.88)
                                                                          ---------------------------------------------------------
      Net asset value, end of year .....................................  $  14.96    $  15.54    $  15.41    $  15.19    $  15.66
                                                                          =========================================================
      Market price per share, end of year ..............................  $  14.62    $  15.28    $  14.10    $  13.79    $  14.37
                                                                          =========================================================
===================================================================================================================================
Total Investment Return*
-----------------------------------------------------------------------------------------------------------------------------------
      Based on net asset value per share ...............................      1.98%       7.63%       8.36%       3.32%       5.68%
                                                                          =========================================================
      Based on market price per share ..................................      1.36%      15.66%       9.21%       2.22%       6.49%
                                                                          =========================================================
===================================================================================================================================
Ratios Based on Average Net Assets of Common Stock
-----------------------------------------------------------------------------------------------------------------------------------
      Total expenses, net of waiver and reimbursement excluding
        reorganization expenses*** .....................................      1.15%       1.14%       1.14%       1.13%       1.16%
                                                                          =========================================================
      Total expenses, excluding reorganization expenses*** .............      1.23%       1.21%       1.21%       1.20%       1.23%
                                                                          =========================================================
      Total expenses*** ................................................      1.23%       1.21%       1.21%       1.20%       1.26%
                                                                          =========================================================
      Total investment income--net*** ..................................      6.94%       6.71%       6.80%       6.96%       7.01%
                                                                          =========================================================
      Amount of dividends to Preferred Stock shareholders ..............      1.93%       1.09%        .55%        .68%        .98%
                                                                          =========================================================
      Investment income--net, to Common Stock shareholders .............      5.01%       5.62%       6.25%       6.28%       6.03%
                                                                          =========================================================
===================================================================================================================================
Ratios Based on Average Net Assets of Preferred Stock
-----------------------------------------------------------------------------------------------------------------------------------
      Dividends to Preferred Stock shareholders ........................      2.82%       1.66%        .83%       1.05%       1.47%
                                                                          =========================================================
===================================================================================================================================
Supplemental Data
-----------------------------------------------------------------------------------------------------------------------------------
      Net assets applicable to Common Stock, end of year (in thousands)   $460,638    $478,413    $474,357    $467,512    $482,184
                                                                          =========================================================
      Preferred Stock outstanding, end of year (in thousands) ..........  $313,000    $313,000    $313,000    $313,000    $313,000
                                                                          =========================================================
      Portfolio turnover ...............................................     52.83%      35.63%      32.04%      59.02%      86.39%
                                                                          =========================================================
===================================================================================================================================
Leverage
-----------------------------------------------------------------------------------------------------------------------------------
      Asset coverage per $1,000 ........................................  $  2,472    $  2,528    $  2,516    $  2,494    $  2,541
                                                                          =========================================================
===================================================================================================================================
Dividends Per Share on Preferred Stock Outstanding
-----------------------------------------------------------------------------------------------------------------------------------
      Series A--Investment income--net .................................  $    689    $    409    $    197    $    247    $    347
                                                                          =========================================================
      Series B--Investment income--net .................................  $    678    $    385    $    182    $    236    $    348
                                                                          =========================================================
      Series C--Investment income--net .................................  $    715    $    432    $    201    $    258    $    377
                                                                          =========================================================
      Series D--Investment income--net .................................  $    728    $    434    $    238    $    287    $    391
                                                                          =========================================================
      Series E--Investment income--net .................................  $    692    $    389    $    198    $    256    $    347
                                                                          =========================================================


*     Total investment returns based on market value, which can be significantly
      greater or lesser than the net asset value, may result in substantially
      different returns. Total investment returns exclude the effects of sales
      charges.
**    Based on average shares outstanding.
***   Do not reflect the effect of dividends to Preferred Stock Shareholders.

      See Notes to Financial Statements.


                ANNUAL REPORTS                  AUGUST 31, 2006               25


Notes to Financial Statements

1. Significant Accounting Policies:

On September 29, 2006, MuniHoldings Florida Insured Fund and MuniHoldings New
York Insured Fund, Inc. were renamed BlackRock MuniHoldings Florida Insured Fund
and BlackRock MuniHoldings New York Insured Fund, Inc. (the "Funds" or
individually as the "Fund"). The Funds are registered under the Investment
Company Act of 1940, as amended, as non-diversified, closed-end management
investment companies. The Funds' financial statements are prepared in conformity
with U.S. generally accepted accounting principles, which may require the use of
management accruals and estimates. Actual results may differ from these
estimates. The Funds determine and make available for publication the net asset
value of their Common Stock/Shares on a daily basis. The Funds' Common
Stock/Shares are listed on the New York Stock Exchange under the symbols MFL and
MHN, respectively. The following is a summary of significant accounting policies
followed by the Funds.

(a) Valuation of investments -- Municipal bonds are traded primarily in the
over-the-counter ("OTC") markets and are valued at the last available bid price
in the OTC market or on the basis of values as obtained by a pricing service.
Pricing services use valuation matrixes that incorporate both dealer-supplied
valuations and valuation models. The procedures of the pricing service and its
valuations are reviewed by the officers of the Funds under the general direction
of the Board of Directors/Trustees. Such valuations and procedures are reviewed
periodically by the Board of Directors/Trustees of the Funds. Financial futures
contracts and options thereon, which are traded on exchanges, are valued at
their closing prices as of the close of such exchanges. Options written or
purchased are valued at the last sale price in the case of exchange-traded
options. In the case of options traded in the OTC market, valuation is the last
asked price (options written) or the last bid price (options purchased). Swap
agreements are valued based upon quoted fair valuations received daily by the
Funds from a pricing service. Short-term investments with a remaining maturity
of 60 days or less are valued at amortized cost, which approximates market
value, under which method the investment is valued at cost and any premium or
discount is amortized on a straight line basis to maturity. Investments in
open-end investment companies are valued at their net asset value each business
day. Securities and other assets for which market quotations are not readily
available are valued at fair value as determined in good faith by or under the
direction of the Board of Directors/Trustees of the Funds.

(b) Derivative financial instruments -- Each Fund may engage in various
portfolio investment strategies both to increase the return of the Fund and to
hedge, or protect, its exposure to interest rate movements and movements in the
securities markets. Losses may arise due to changes in the value of the contract
or if the counterparty does not perform under the contract.

o     Financial futures contracts -- Each Fund may purchase or sell financial
      futures contracts and options on such financial futures contracts.
      Financial futures contracts are contracts for delayed delivery of
      securities at a specific future date and at a specific price or yield.
      Upon entering into a contract, the Fund deposits and maintains as
      collateral such initial margin as required by the exchange on which the
      transaction is effected. Pursuant to the contract, the Fund agrees to
      receive from or pay to the broker an amount of cash equal to the daily
      fluctuation in value of the contract. Such receipts or payments are known
      as variation margin and are recorded by the Funds as unrealized gains or
      losses. When the contract is closed, the Fund records a realized gain or
      loss equal to the difference between the value of the contract at the time
      it was opened and the value at the time it was closed.

o     Options -- Each Fund may write covered call options and purchase call and
      put options. When the Fund writes an option, an amount equal to the
      premium received by the Fund is reflected as an asset and an equivalent
      liability. The amount of the liability is subsequently marked-to-market to
      reflect the current market value of the option written. When a security is
      purchased or sold through an exercise of an option, the related premium
      paid (or received) is added to (or deducted from) the basis of the
      security acquired or deducted from (or added to) the proceeds of the
      security sold. When an option expires (or the Fund enters into a closing
      transaction), the Fund realizes a gain or loss on the option to the extent
      of the premiums received or paid (or gain or loss to the extent the cost
      of the closing transaction exceeds the premium paid or received).

      Written and purchased options are non-income producing investments.

o     Forward interest rate swaps -- Each Fund may enter into forward interest
      rate swaps. In a forward interest rate swap, the Fund and the counterparty
      agree to make periodic net payments on a specified notional contract
      amount, commencing on a specified future effective date, unless terminated
      earlier. When the agreement is closed,


26              ANNUAL REPORTS                  AUGUST 31, 2006


Notes to Financial Statements (continued)

      the Fund records a realized gain or loss in an amount equal to the value
      of the agreement.

o     Swaps -- Each Fund may enter into swap agreements, which are OTC contracts
      in which the Fund and a counterparty agree to make periodic net payments
      on a specified notional amount. The net payments can be made for a set
      period of time or may be triggered by a predetermined credit event. The
      net periodic payments may be based on a fixed or variable interest rate;
      the change in market value of a specified security, basket of securities
      or index; or the return generated by a security. These periodic payments
      received or made by the Fund are recorded in the accompanying Statement of
      Operations as realized gains or losses, respectively. Gains or losses are
      also realized upon termination of the swap agreements. Swaps are
      marked-to-market daily and changes in value are recorded as unrealized
      appreciation (depreciation). Risks include changes in the returns of the
      underlying instruments, failure of the counterparties to perform under the
      contracts' terms and the possible lack of liquidity with respect to the
      swap agreements.

(c) Income taxes -- It is each Fund's policy to comply with the requirements of
the Internal Revenue Code applicable to regulated investment companies and to
distribute substantially all of its taxable income to its shareholders.
Therefore, no federal income tax provision is required.

(d) Recent accounting pronouncement -- In July 2006, the Financial Accounting
Standards Board ("FASB") issued Interpretation No. 48 ("FIN 48") entitled
"Accounting for Uncertainty in Income Taxes -- an interpretation of FASB
Statement No. 109." FIN 48 prescribes the minimum recognition threshold a tax
position must meet in connection with accounting for uncertainties in income tax
positions taken or expected to be taken by an entity including mutual funds
before being measured and recognized in the financial statements. Adoption of
FIN 48 is required for fiscal years beginning after December 15, 2006. The
impact on the Funds' financial statements, if any, is currently being assessed.

(e) Security transactions and investment income -- Security transactions are
recorded on the dates the transactions are entered into (the trade dates).
Realized gains and losses on security transactions are determined on the
identified cost basis. Dividend income is recorded on the ex-dividend dates.
Interest income is recognized on the accrual basis. The Funds amortize all
premiums and discounts on debt securities.

(f) Dividends and distributions -- Dividends from net investment income are
declared and paid monthly. Distributions of capital gains are recorded on the
ex-dividend dates.

(g) Reclassifications:

BlackRock MuniHoldings Florida Insured Fund

U.S. generally accepted accounting principles require that certain components of
net assets be adjusted to reflect permanent differences between financial and
tax reporting. Accordingly, during the current year, $17,239 has been
reclassified between undistributed net investment income and paid-in capital in
excess of par as a result of a permanent difference attributable to
non-deductible expenses. This reclassification has no effect on net assets or
net asset values per share.

BlackRock MuniHoldings New York Insured Fund, Inc.

U.S. generally accepted accounting principles require that certain components of
net assets be adjusted to reflect permanent differences between financial and
tax reporting. Accordingly, during the current year, $16,244 has been
reclassified between accumulated net realized capital losses and undistributed
net investment income and $5,131 has been reclassified between undistributed net
investment income and paid-in capital in excess of par as a result of permanent
differences attributable to amortization methods on fixed income securities and
nondeductible expenses. These reclassifications have no effect on net assets or
net asset values per share.

2. Investment Advisory Agreement and Transactions with Affiliates:

Each Fund has entered into an Investment Advisory Agreement with Fund Asset
Management, L.P. ("FAM"). The general partner of FAM is Princeton Services, Inc.
("PSI"), an indirect, wholly-owned subsidiary of Merrill Lynch & Co., Inc. ("ML
& Co."), which is the limited partner.

FAM is responsible for the management of each Fund's portfolio and provides the
necessary personnel, facilities, equipment and certain other services necessary
to the operations of the Fund. For such services, each Fund pays a monthly fee
at an annual rate of .55% of the Fund's average weekly net assets, including
proceeds from the issuance of Preferred Shares/Stock. The Investment Adviser has
agreed to


                ANNUAL REPORTS                  AUGUST 31, 2006               27


Notes to Financial Statements (continued)

reimburse its management fee by the amount of management fees each Fund pays to
FAM indirectly through its investments described below:

--------------------------------------------------------------------------------
                                       Investment                  Reimbursement
--------------------------------------------------------------------------------
BlackRock MuniHoldings          CMA Florida Municipal
Florida Insured Fund            Money Fund/Merrill
                                Lynch Institutional
                                Tax-Exempt Fund ....................  $53,167

BlackRock MuniHoldings          CMA New York Municipal
New York Insured Fund, Inc.     Money Fund .........................  $12,616
--------------------------------------------------------------------------------

In addition, the Investment Adviser has agreed to reimburse its management fee
on the proceeds of Preferred Shares/Stock that exceeds 35% of each Fund's total
net assets. For the year ended August 31, 2006, FAM earned and waived the
following:

--------------------------------------------------------------------------------
                                               Fees Earned               Waived
--------------------------------------------------------------------------------
BlackRock MuniHoldings
Florida Insured Fund .........................  $5,052,117              $353,283
BlackRock MuniHoldings
New York Insured Fund, Inc. ..................  $4,243,988              $363,237
--------------------------------------------------------------------------------

For the year ended August 31, 2006, the Funds reimbursed FAM for certain
accounting services. The reimbursements were as follows:

--------------------------------------------------------------------------------
                                                                   Reimbursement
--------------------------------------------------------------------------------
BlackRock MuniHoldings
Florida Insured Fund ...............................................  $20,092
BlackRock MuniHoldings
New York Insured Fund, Inc. ........................................  $16,879
--------------------------------------------------------------------------------

In February 2006, ML & Co. and BlackRock, Inc. entered into an agreement to
contribute ML & Co.'s investment management business, including FAM, to the
investment management business of BlackRock, Inc. The transaction will close on
September 29, 2006.

On July 31, 2006 and August 15, 2006, shareholders of the BlackRock MuniHoldings
Florida Insured Fund and the BlackRock New York Insured Fund, Inc.,
respectively, approved a new Investment Advisory Agreement with BlackRock
Advisors, Inc. (the "Manager"), a wholly-owned subsidiary of BlackRock, Inc.
BlackRock Advisors, Inc. was reorganized into BlackRock Advisors, LLC. The new
advisory agreement will become effective on September 29, 2006 and the
investment advisory fees are unchanged. In addition, the Manager has entered
into a sub-advisory agreement with BlackRock Investment Management, LLC, an
affiliate, under which the Manager pays the Sub-Adviser for services it provides
a fee equal to 59% of the management fees paid to the Manager.

Certain officers and/or directors/trustees of the Funds are officers and/or
directors of FAM, PSI, and/or ML & Co.

3. Investments:

Purchases and sales of investments, excluding short-term securities, for the
year ended August 31, 2006 were as follows:

--------------------------------------------------------------------------------
                                                BlackRock           BlackRock
                                              MuniHoldings        MuniHoldings
                                            Florida Insured     New York Insured
                                                  Fund             Fund, Inc.
--------------------------------------------------------------------------------
Total Purchases ............................  $412,561,067        $398,605,090
Total Sales ................................  $431,521,737        $410,334,048
--------------------------------------------------------------------------------

4. Share/Stock Transactions:

BlackRock MuniHoldings Florida Insured Fund is authorized to issue an unlimited
number of shares of beneficial interest, including Preferred Shares, par value
$.10 per share, all of which were initially classified as Common Shares. The
Board of Trustees is authorized, however, to reclassify any unissued shares of
beneficial interest without the approval of holders of Common Shares.

BlackRock MuniHoldings New York Insured Fund, Inc. is authorized to issue
200,000,000 shares of stock, including Preferred Stock, par value $.10 per
share, all of which were initially classified as Common Stock. The Board of
Directors is authorized, however, to reclassify any unissued shares of stock
without approval of holders of Common Stock.

Common Shares/Stock

BlackRock MuniHoldings Florida Insured Fund

Shares issued and outstanding during the years ended August 31, 2006 and August
31, 2005 increased by 4,505 and 34,561, respectively, as a result of dividend
reinvestments.

BlackRock MuniHoldings New York Insured Fund, Inc.

Shares issued and outstanding during the year ended August 31, 2006 increased by
10,523 as a result of dividend reinvestment and remained constant during the
year ended August 31, 2005.

Preferred Shares/Stock

Auction Market Preferred Shares/Stock are redeemable shares of Preferred
Shares/Stock of the Funds, with a liquidation preference of $25,000 per share
plus accrued and unpaid dividends that entitle their holders to receive cash
dividends at an annual rate that may vary for the successive dividend periods.


28              ANNUAL REPORTS                  AUGUST 31, 2006


Notes to Financial Statements (concluded)

The yields in effect at August 31, 2006 were as follows:

--------------------------------------------------------------------------------
                                               BlackRock            BlackRock
                                              MuniHoldings        MuniHoldings
                                            Florida Insured     New York Insured
                                                  Fund             Fund, Inc.
--------------------------------------------------------------------------------
Series A .................................        3.45%               3.05%
Series B .................................        3.45%               2.40%
Series C .................................        3.45%               3.02%
Series D .................................        3.50%               3.00%
Series E .................................        3.45%               3.00%
--------------------------------------------------------------------------------

Each Fund pays commissions to certain broker-dealers at the end of each auction
at an annual rate ranging from .25% to .375%, calculated on the proceeds of each
auction. For the year ended August 31, 2006, Merrill Lynch, Pierce, Fenner &
Smith Incorporated, an affiliate of FAM, earned commissions as follows:

--------------------------------------------------------------------------------
                                                                     Commissions
--------------------------------------------------------------------------------
BlackRock MuniHoldings
Florida Insured Fund ..............................................     $433,525
BlackRock MuniHoldings
New York Insured Fund, Inc. .......................................     $290,107
--------------------------------------------------------------------------------

5. Distributions to Shareholders:

Each Fund paid a tax-exempt income dividend to holders of Common Stock/Shares in
the amounts of $.065000 per share and $.061000 per share relating to BlackRock
MuniHoldings Florida Insured Fund and BlackRock MuniHoldings New York Insured
Fund, Inc. respectively, on September 28, 2006 to shareholders of record on
September 15, 2006.

BlackRock MuniHoldings Florida Insured Fund

The tax character of distributions paid during the fiscal years ended August 31,
2006 and August 31, 2005 was as follows:

--------------------------------------------------------------------------------
                                                      8/31/2006       8/31/2005
--------------------------------------------------------------------------------
Distributions paid from:
  Tax-exempt income ...............................  $42,869,499     $44,560,482
                                                     ---------------------------
Total distributions ...............................  $42,869,499     $44,560,482
                                                     ===========================

As of August 31, 2006, the components of accumulated losses on a tax basis were
as follows:

-----------------------------------------------------------------------------
Undistributed tax-exempt income--net .....................       $  2,882,873
Undistributed long-term capital gains--net ...............                 --
                                                                 ------------
Total undistributed earnings--net ........................          2,882,873
Capital loss carryforward ................................        (60,396,941)*
Unrealized gains--net ....................................         38,157,210**
                                                                 ------------
Total accumulated losses--net ............................       $(19,356,858)
                                                                 ============

*     On August 31, 2006, the Fund had a net capital loss carryforward of
      $60,396,941, of which $24,175,627 expires in 2007, $9,834,324 expires in
      2008, $16,563,861 expires in 2009, $1,836,991 expires in 2012 and
      $7,986,138 expires in 2013. This amount will be available to offset like
      amounts of any future taxable gains.
**    The difference between book-basis and tax-basis net unrealized gains is
      attributable primarily to the tax deferral of losses on wash sales, the
      tax deferral of losses on straddles and the difference between book and
      tax amortization methods for premiums and discounts on fixed income
      securities.

BlackRock MuniHoldings New York Insured Fund, Inc.

The tax character of distributions paid during the fiscal years ended August 31,
2006 and August 31, 2005 was as follows:

--------------------------------------------------------------------------------
                                                      8/31/2006       8/31/2005
--------------------------------------------------------------------------------
Distributions paid from:
  Tax-exempt income ...............................  $34,819,729     $34,381,754
                                                     ---------------------------
Total distributions ...............................  $34,819,729     $34,381,754
                                                     ===========================

As of August 31, 2006, the components of accumulated losses on a tax basis were
as follows:

-----------------------------------------------------------------------------
Undistributed tax-exempt income--net .....................       $  2,141,695
Undistributed long-term capital gains--net ...............                 --
                                                                 ------------
Total undistributed earnings--net ........................          2,141,695
Capital loss carryforward ................................        (37,243,736)*
Unrealized gains--net ....................................         17,598,503**
                                                                 ------------
Total accumulated losses--net ............................       $(17,503,538)
                                                                 ============

*     On August 31, 2006, the Fund had a net capital loss carryforward of
      $37,243,736, of which $566,530 expires in 2007, $3,509,287 expires in
      2008, $17,055,889 expires in 2009, $15,054,033 expires in 2013 and
      $1,057,997 expires in 2014. This amount will be available to offset like
      amounts of any future taxable gains.
**    The difference between book-basis and tax-basis net unrealized gains is
      attributable primarily to the tax deferral of losses on wash sales, the
      tax deferral of losses on straddles, the difference between book and tax
      amortization methods for premiums and discounts on fixed income
      securities, the realization for tax purposes of unrealized gains (losses)
      on certain futures contracts and the deferral of post-October capital
      losses for tax purposes.


                ANNUAL REPORTS                  AUGUST 31, 2006               29


Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Trustees/Directors of BlackRock MuniHoldings
Florida Insured Fund and BlackRock MuniHoldings New York Insured Fund, Inc.:

We have audited the accompanying statements of net assets, including the
schedules of investments, of BlackRock MuniHoldings Florida Insured Fund
(formerly MuniHoldings Florida Insured Fund) and BlackRock MuniHoldings New York
Insured Fund, Inc. (formerly MuniHoldings New York Insured Fund, Inc. ) (the
"Funds"), as of August 31, 2006, and the related statements of operations for
the year then ended, the statements of changes in net assets for each of the two
years in the period then ended, and the financial highlights for each of the
five years in the period then ended. These financial statements and financial
highlights are the responsibility of the Funds' management. Our responsibility
is to express an opinion on these financial statements and financial highlights
based on our audits.

We conducted our audits in accordance with the standards of the Public Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements and financial highlights are free of material misstatement.The Funds
are not required to have, nor were we engaged to perform, audits of their
internal control over financial reporting. Our audits included consideration of
internal control over financial reporting as a basis for designing audit
procedures that are appropriate in the circumstances, but not for the purpose of
expressing an opinion on the effectiveness of the Funds' internal control over
financial reporting. Accordingly, we express no such opinion. An audit also
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. Our procedures included confirmation of
securities owned as of August 31, 2006 by correspondence with the custodian and
brokers; where replies were not received from brokers, we performed other
auditing procedures. We believe that our audits provide a reasonable basis for
our opinion.

In our opinion, the financial statements and financial highlights referred to
above present fairly, in all material respects, the financial position of
BlackRock MuniHoldings Florida Insured Fund and BlackRock MuniHoldings New York
Insured Fund, Inc. as of August 31, 2006, the results of their operations for
the year then ended, the changes in their net assets for each of the two years
in the period then ended, and the financial highlights for each of the five
years in the period then ended, in conformity with U.S. generally accepted
accounting principles.

Deloitte & Touche LLP
Princeton, New Jersey
October 20, 2006

Fund Certification (unaudited)

In February 2006, BlackRock MuniHoldings Florida Insured Fund and BlackRock
MuniHoldings New York Insured Fund, Inc. filed their Chief Executive Officer
Certification for the prior year with the New York Stock Exchange pursuant to
Section 303A.12(a) of the New York Stock Exchange Corporate Governance Listing
Standards.

The Funds' Chief Executive Officer and Chief Financial Officer Certifications
pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 were filed with the
Funds' Form N-CSR and are available on the Securities and Exchange Commission's
Web site at http://www.sec.gov.

Important Tax Information (unaudited)

All of the net investment income distributions paid by BlackRock MuniHoldings
Florida Insured Fund and BlackRock MuniHoldings New York Insured Fund, Inc.
during the taxable year ended August 31, 2006 qualify as tax-exempt interest
dividends for federal income tax purposes.


30              ANNUAL REPORTS                  AUGUST 31, 2006


Automatic Dividend Reinvestment Plan

How the Plan Works -- The Fund offers a Dividend Reinvestment Plan (the "Plan")
under which income and capital gains dividends paid by the Fund are
automatically reinvested in additional shares of Common Stock of the Fund. The
Plan is administered on behalf of the shareholders by The Bank of New York (the
"Plan Agent"). Under the Plan, whenever the Fund declares a dividend,
participants in the Plan will receive the equivalent in shares of Common Stock
of the Fund. The Plan Agent will acquire the shares for the participant's
account either (i) through receipt of additional unissued but authorized shares
of the Fund ("newly issued shares") or (ii) by purchase of outstanding shares of
Common Stock on the open market on the New York Stock Exchange or elsewhere. If,
on the dividend payment date, the Fund's net asset value per share is equal to
or less than the market price per share plus estimated brokerage commissions (a
condition often referred to as a "market premium"), the Plan Agent will invest
the dividend amount in newly issued shares. If the Fund's net asset value per
share is greater than the market price per share (a condition often referred to
as a "market discount"), the Plan Agent will invest the dividend amount by
purchasing on the open market additional shares. If the Plan Agent is unable to
invest the full dividend amount in open market purchases, or if the market
discount shifts to a market premium during the purchase period, the Plan Agent
will invest any uninvested portion in newly issued shares. The shares acquired
are credited to each shareholder's account. The amount credited is determined by
dividing the dollar amount of the dividend by either (i) when the shares are
newly issued, the net asset value per share on the date the shares are issued or
(ii) when shares are purchased in the open market, the average purchase price
per share.

Participation in the Plan -- Participation in the Plan is automatic, that is, a
shareholder is automatically enrolled in the Plan when he or she purchases
shares of Common Stock of the Fund unless the shareholder specifically elects
not to participate in the Plan. Shareholders who elect not to participate will
receive all dividend distributions in cash. Shareholders who do not wish to
participate in the Plan must advise the Plan Agent in writing (at the address
set forth below) that they elect not to participate in the Plan. Participation
in the Plan is completely voluntary and may be terminated or resumed at any time
without penalty by writing to the Plan Agent.

Benefits of the Plan -- The Plan provides an easy, convenient way for
shareholders to make additional, regular investments in the Fund. The Plan
promotes a long-term strategy of investing at a lower cost. All shares acquired
pursuant to the Plan receive voting rights. In addition, if the market price
plus commissions of the Fund's shares is above the net asset value, participants
in the Plan will receive shares of the Fund for less than they could otherwise
purchase them and with a cash value greater than the value of any cash
distribution they would have received. However, there may not be enough shares
available in the market to make distributions in shares at prices below the net
asset value. Also, since the Fund does not redeem shares, the price on resale
may be more or less than the net asset value.

Plan Fees -- There are no enrollment fees or brokerage fees for participating in
the Plan. The Plan Agent's service fees for handling the reinvestment of
distributions are paid for by the Fund. However, brokerage commissions may be
incurred when the Fund purchases shares on the open market and shareholders will
pay a pro rata share of any such commissions.

Tax Implications -- The automatic reinvestment of dividends and distributions
will not relieve participants of any federal, state or local income tax that may
be payable (or required to be withheld) on such dividends. Therefore, income and
capital gains may still be realized even though shareholders do not receive
cash. The value of shares acquired pursuant to the Plan will generally be
excluded from gross income to the extent that the cash amount reinvested would
be excluded from gross income. If, when the Fund's shares are trading at a
market premium, the Fund issues shares pursuant to the Plan that have a greater
fair market value than the amount of cash reinvested, it is possible that all or
a portion of the discount from the market value (which may not exceed 5% of the
fair market value of the Fund's shares) could be viewed as a taxable
distribution. If the discount is viewed as a taxable distribution, it is also
possible that the taxable character of this discount would be allocable to all
the shareholders, including shareholders who do not participate in the Plan.
Thus, shareholders who do not participate in the Plan might be required to
report as ordinary income a portion of their distributions equal to their
allocable share of the discount.

Contact Information -- All correspondence concerning the Plan, including any
questions about the Plan, should be directed to the Plan Agent at The Bank of
New York, Church Street Station, P.O. Box 11258, New York, NY 10286-1258,
Telephone: 800-432-8224.


                ANNUAL REPORTS                  AUGUST 31, 2006               31


Disclosure of New Investment Advisory Agreement

New BlackRock Investment Advisory Agreements -- Matters Considered by the Boards

In connection with the combination of Merrill Lynch's investment advisory
business, including Fund Asset Management, L.P. (the "Previous Investment
Adviser"), with that of BlackRock, Inc. ("BlackRock") to create a new
independent company ("New BlackRock") (the "Transaction"), each Fund's Board of
Trustees/Directors ("directors") considered and approved a new investment
advisory agreement (each a "BlackRock Investment Advisory Agreement") between
the Fund and BlackRock Advisors, LLC ("BlackRock Advisors"). Each Fund's
shareholders subsequently approved the Fund's BlackRock Investment Advisory
Agreement and it became effective on September 29, 2006, replacing the Fund's
investment advisory agreement with the Previous Investment Adviser (each a
"Previous Investment Advisory Agreement").

Each Board discussed the BlackRock Investment Advisory Agreement at telephonic
and in-person meetings held during April and May 2006. Each Fund's Board,
including the independent directors, approved the Fund's BlackRock Investment
Advisory Agreement at an in-person meeting held on May 12, 2006.

To assist each Fund's Board in its consideration of the Fund's BlackRock
Investment Advisory Agreement, BlackRock provided materials and information
about BlackRock, including its financial condition and asset management
capabilities and organization, and Merrill Lynch provided materials and
information about the Transaction. Each Fund's independent directors, through
their independent legal counsel, also requested and received additional
information from Merrill Lynch and BlackRock in connection with their
consideration of the Fund's BlackRock Investment Advisory Agreement. The
additional information was provided in advance of the May 12, 2006 meetings. In
addition, each Fund's independent directors consulted with their counsel and
Fund counsel on numerous occasions, discussing, among other things, the legal
standards and certain other considerations relevant to the directors'
deliberations.

At each Fund's Board meetings, the directors discussed with Merrill Lynch
management and certain BlackRock representatives the Transaction, its strategic
rationale and BlackRock's general plans and intentions regarding the Fund. At
these Board meetings, representatives of Merrill Lynch and BlackRock made
presentations to and responded to questions from the Boards. The directors also
inquired about the plans for and anticipated roles and responsibilities of
certain employees and officers of the Previous Investment Adviser, and of its
affiliates, to be transferred to BlackRock in connection with the Transaction.
The independent directors also conferred separately and with their counsel about
the Transaction and other matters related to the Transaction on a number of
occasions, including in connection with the April and May 2006 meetings. After
the presentations and after reviewing the written materials provided, each
Fund's independent directors met in executive sessions with their counsel to
consider the Fund's BlackRock Investment Advisory Agreement.

In connection with the directors' review of each Fund's BlackRock Investment
Advisory Agreement, Merrill Lynch and/or BlackRock advised the directors about a
variety of matters. The advice included the following, among other matters:

o     that there was not expected to be any diminution in the nature, quality
      and extent of services provided to either Fund or its shareholders by
      BlackRock Advisors, including compliance services;

o     that operation of New BlackRock as an independent investment management
      firm would enhance its ability to attract and retain talented
      professionals;

o     that each Fund was expected to benefit from having access to BlackRock's
      state of the art technology and risk management analytic tools, including
      investment tools, provided under the BlackRock Solutions(R) brand name;

o     that BlackRock had no present intention to alter any applicable expense
      waivers or reimbursements that were currently in effect and, while it
      reserved the right to do so in the future, it would seek Board approval
      before making any changes;


32              ANNUAL REPORTS                  AUGUST 31, 2006


o     that in connection with the Transaction, Merrill Lynch and BlackRock had
      agreed to conduct, and use reasonable best efforts to cause their
      respective affiliates to conduct, their respective businesses in
      compliance with the conditions of Section 15(f) of the Investment Company
      Act of 1940 (the "1940 Act") in relation to any public funds advised by
      BlackRock or the Previous Investment Adviser (or affiliates),
      respectively; and

o     that Merrill Lynch and BlackRock would derive benefits from the
      Transaction and that, as a result, they had a financial interest in the
      matters being considered that was different from that of Fund
      shareholders.

The directors considered the information provided by Merrill Lynch and BlackRock
above, and, among other factors, the following:

o     the potential benefits to each Fund's shareholders from being part of a
      combined fund family with BlackRock-sponsored funds, including possible
      economies of scale and access to investment opportunities;

o     the reputation, financial strength and resources of BlackRock and its
      investment advisory subsidiaries and the anticipated financial strength
      and resources of New BlackRock;

o     the compliance policies and procedures of BlackRock Advisors;

o     the terms and conditions of each Fund's BlackRock Investment Advisory
      Agreement, including the fact that neither Fund's schedule of total
      advisory fees would increase under the BlackRock Investment Advisory
      Agreement, but would remain the same;

o     that in February 2006, each Fund's Board had performed a full annual
      review of the Previous Investment Advisory Agreement, as required by the
      1940 Act, and had determined that the Previous Investment Adviser had the
      capabilities, resources and personnel necessary to provide the advisory
      and administrative services that were then being provided to the Fund; and
      that the advisory and/or management fees paid by the Fund, taking into
      account any applicable agreed-upon fee waivers and breakpoints, had
      represented reasonable compensation to the Previous Investment Adviser in
      light of the services provided, the costs to the Previous Investment
      Adviser of providing those services, economies of scale, the fees and
      other expenses paid by similar funds (including information provided by
      Lipper Inc. ("Lipper")), and such other matters as the directors had
      considered relevant in the exercise of their reasonable judgment; and

o     that Merrill Lynch had agreed to pay all expenses of each Fund in
      connection with the consideration by the Fund's Board of the Fund's
      BlackRock Investment Advisory Agreement and related agreements and all
      costs of shareholder approval of the BlackRock Investment Advisory
      Agreement, and as a result the Fund would bear no costs in obtaining
      shareholder approval of the BlackRock Investment Advisory Agreement.

Certain of these considerations are discussed in more detail below.

In its review of each Fund's BlackRock Investment Advisory Agreement, the Fund's
Board assessed the nature, quality and scope of the services to be provided to
the Fund by the personnel of BlackRock Advisors and its affiliates, including
administrative services, shareholder services, oversight of fund accounting and
assistance in meeting legal and regulatory requirements. In its review of each
Fund's BlackRock Investment Advisory Agreement, the Fund's Board also considered
a range of information in connection with its oversight of the services to be
provided by BlackRock Advisors and its affiliates. Among the matters considered
for each Fund were: (a) fees (in addition to management fees) to be paid to
BlackRock Advisors and its affiliates by the Fund; (b) Fund operating expenses
paid to third parties; (c) the resources devoted to and compliance reports
relating to the Fund's investment objective, policies and restrictions, and its
compliance with its Code of Ethics and BlackRock Advisors' compliance policies
and procedures; and (d) the nature, cost and character of non-investment
management services to be provided by BlackRock Advisors and its affiliates.


                ANNUAL REPORTS                  AUGUST 31, 2006               33


Disclosure of New Investment Advisory Agreement (continued)

In the period prior to each Fund's Board meeting to consider renewal of the
Fund's Previous Investment Advisory Agreement, the Board had requested and
received materials specifically relating to the Previous Investment Advisory
Agreement. For each Fund, these materials included (a) information compiled by
Lipper on the fees and expenses and the investment performance of the Fund as
compared to a comparable group of funds as classified by Lipper; (b) information
comparing the Fund's market price with its net asset value per share; (c) a
discussion by the Fund's portfolio management team on investment strategies used
by the Fund during its most recent fiscal year; (d) information on the
profitability to the Previous Investment Adviser of the Fund's Previous
Investment Advisory Agreement and other payments received by the Previous
Investment Adviser and its affiliates from the Fund; and (e) information
provided by the Previous Investment Adviser concerning services related to the
valuation and pricing of Fund portfolio holdings, the Fund's portfolio turnover
statistics, and direct and indirect benefits to the Previous Investment Adviser
and its affiliates from their relationship with the Fund.

In their deliberations, each Fund's directors considered information received in
connection with their most recent approval of the continuance of the Fund's
Previous Investment Advisory Agreement, in addition to information provided by
BlackRock and BlackRock Advisors in connection with their evaluation of the
terms and conditions of the Fund's BlackRock Investment Advisory Agreement.
Neither Fund's directors identified any particular information that was
all-important or controlling, and each director attributed different weights to
the various factors. Each Fund's directors, including a majority of the
independent directors, concluded that the terms of the Fund's BlackRock
Investment Advisory Agreement are appropriate, that the fees to be paid are
reasonable in light of the services to be provided to the Fund, and that the
BlackRock Investment Advisory Agreement should be approved and recommended to
Fund shareholders.

Nature, Quality and Extent of Services Provided -- Each Fund's Board reviewed
the nature, quality and extent of services provided by the Previous Investment
Adviser, including the investment advisory services and the resulting
performance of the Fund, as well as the nature, quality and extent of services
expected to be provided by BlackRock Advisors. Each Fund's Board focused
primarily on the Previous Investment Adviser's investment advisory services and
the Fund's investment performance, but also considered certain areas in which
both the Previous Investment Adviser and the Fund received services as part of
the Merrill Lynch complex. Each Fund's Board compared the Fund's performance --
both including and excluding the effects of fees and expenses -- to the
performance of a comparable group of funds, and the performance of a relevant
index or combination of indexes. While each Board reviews performance data at
least quarterly, consistent with the Previous Investment Adviser's investment
goals, the Board attaches more importance to performance over relatively long
periods of time, typically three to five years.

In evaluating the nature, quality and extent of the services to be provided by
BlackRock Advisors under each Fund's BlackRock Investment Advisory Agreement,
the directors considered, among other things, the expected impact of the
Transaction on the operations, facilities, organization and personnel of New
BlackRock and how it would affect the Fund; the ability of BlackRock Advisors to
perform its duties after the Transaction; and any anticipated changes to the
current investment and other practices of the Fund.

Each Fund's directors were given information with respect to the potential
benefits to the Fund and its shareholders from having access to BlackRock's
state of the art technology and risk management analytic tools, including the
investment tools provided under the BlackRock Solutions brand name.

Each Fund's directors were advised that, as a result of Merrill Lynch's equity
interest in BlackRock after the Transaction, the Fund would continue to be
subject to restrictions concerning certain transactions involving Merrill Lynch
affiliates (for example, transactions with a Merrill Lynch broker-dealer acting
as principal) absent revised or new regulatory relief. Each Fund's directors
were advised that a revision of existing regulatory relief with respect to these
restrictions was being sought from the Securities and Exchange Commission and
were advised of the possibility of the receipt of such revised regulatory
relief.


34              ANNUAL REPORTS                  AUGUST 31, 2006


Based on their review of the materials provided and the assurances they had
received from the management of Merrill Lynch and of BlackRock, each Fund's
directors determined that the nature and quality of services to be provided to
the Fund under the Fund's BlackRock Investment Advisory Agreement were expected
to be as good as or better than that provided under the Fund's Previous
Investment Advisory Agreement. The directors were advised that BlackRock
Advisors did not plan to change either Fund's portfolio management team upon the
closing of the transaction. It was noted, however, that other changes in
personnel were expected to follow the Transaction and the combination of the
operations of the Previous Investment Adviser and its affiliates with those of
BlackRock. Each Fund's directors noted that if current portfolio managers or
other personnel were to cease to be available prior to the closing of the
Transaction, the Board would consider all available options, including seeking
the investment advisory or other services of BlackRock affiliates. Accordingly,
each Fund's directors concluded that, overall, they were satisfied at the
present time with assurances from BlackRock and BlackRock Advisors as to the
expected nature, quality and extent of the services to be provided to the Fund
under the Fund's BlackRock Investment Advisory Agreement.

Costs of Services Provided and Profitability -- It was noted that, in
conjunction with their recent review of each Fund's Previous Investment Advisory
Agreement, the Fund's directors had received, among other things, a report from
Lipper comparing the Fund's fees and expenses to those of a peer group selected
by Lipper, and information as to the fees charged by the Previous Investment
Adviser or its affiliates to other registered investment company clients for
investment management services. Each Fund's Board reviewed the Fund's
contractual management fee rate and actual management fee rate as a percentage
of total assets at common asset levels -- the actual rate includes advisory fees
and the effects of any fee waivers -- compared to the other funds in its Lipper
category. Each Fund's Board also compared the Fund's total expenses to those of
other comparable funds. The information showed that each Fund had fees and
expenses within the range of fees and expenses of comparable funds. Each Fund's
Board considered the services to be provided by and the fees to be charged by
BlackRock Advisors to other funds with similar investment mandates and noted
that the fees charged by BlackRock Advisors in those cases, including fee
waivers and expense reimbursements, were generally comparable to those being
charged to the Fund. Each Fund's Board concluded that the Fund's management fee
and fee rate and overall expense ratio are reasonable compared to those of other
comparable funds.

In evaluating the costs of the services to be provided by BlackRock Advisors
under each Fund's BlackRock Investment Advisory Agreement, the Fund's directors
considered, among other things, whether advisory fees or other expenses would
change as a result of the Transaction. Based on their review of the materials
provided and the fact that each Fund's BlackRock Investment Advisory Agreement
is substantially similar to the Fund's Previous Investment Advisory Agreement in
all material respects, including the rate of compensation, the Fund's directors
determined that the Transaction should not increase the total fees payable,
including any fee waivers and expense reimbursements, for advisory and
administrative services. Each Fund's directors noted that it was not possible to
predict how the Transaction would affect BlackRock Advisors' profitability from
its relationship with the Fund.

Each Fund's directors discussed with BlackRock Advisors its general methodology
to be used in determining its profitability with respect to its relationship
with the Fund. Each Fund's directors noted that they expect to receive
profitability information from BlackRock Advisors on at least an annual basis
and thus be in a position to evaluate whether any adjustments in Fund fees
and/or fee breakpoints would be appropriate.

Fees and Economies of Scale -- Each Fund's Board considered the extent to which
economies of scale might be realized as the assets of the Fund increase and
whether there should be changes in the management fee rate or structure in order
to enable the Fund to participate in these economies of scale. Each Board
determined that changes were not currently necessary.


                ANNUAL REPORTS                  AUGUST 31, 2006               35


Disclosure of New Investment Advisory Agreement (concluded)

In reviewing the Transaction, the directors considered, among other things,
whether advisory fees or other expenses would change as a result of the
Transaction. Based on the fact that each Fund's BlackRock Investment Advisory
Agreement is substantially similar to the Fund's Previous Investment Advisory
Agreement in all material respects, including the rate of compensation, the
Fund's directors determined that as a result of the Transaction, the Fund's
total advisory fees would be no higher than the fees under the Fund's Previous
Investment Advisory Agreement. Each Fund's directors noted that in conjunction
with their most recent deliberations concerning the Fund's Previous Investment
Advisory Agreement, they had determined that the total fees for advisory and
administrative services for the Fund were reasonable in light of the services
provided. It was noted that in conjunction with the recent review of each Fund's
Previous Investment Advisory Agreement, the Fund's directors had received, among
other things, a report from Lipper comparing the Fund's fees, expenses and
performance to those of a peer group selected by Lipper, and information as to
the fees charged by the Previous Investment Adviser or its affiliates to other
registered investment company clients for investment management services. Each
Fund's directors concluded that because the rates for advisory fees for the Fund
would be no higher than the fee rates in effect at the time, the proposed
management fee structure, including any fee waivers, was reasonable and that no
additional changes were currently necessary.

Fall-Out Benefits -- In evaluating the fall-out benefits to be received by
BlackRock Advisors under each Fund's BlackRock Investment Advisory Agreement,
the Fund's directors considered whether BlackRock Advisors would experience such
benefits to the same extent that the Previous Investment Adviser was
experiencing such benefits under the Fund's Previous Investment Advisory
Agreement. Based on their review of the materials provided, including materials
received in connection with their most recent approval of the continuance of
each Fund's Previous Investment Advisory Agreement, and their discussions with
management of the Previous Investment Adviser and BlackRock, the Fund's
directors determined that BlackRock Advisors' fall-out benefits could include
increased ability for BlackRock to distribute shares of its funds and other
investment products. The directors noted that any fall-out benefits were
difficult to quantify with certainty at this time, and indicated that they would
continue to evaluate them going forward.

Investment Performance -- Each Fund's directors considered investment
performance for the Fund. Each Fund's directors compared the Fund's performance
-- both including and excluding the effects of fees and expenses -- to the
performance of a comparable group of funds, and the performance of a relevant
index or combination of indexes. The comparative information received from
Lipper showed each Fund's performance at various levels within the range of
performance of comparable funds over different time periods. While each Board
reviews performance data at least quarterly, consistent with the Previous
Investment Adviser's investment goals, the Board attaches more importance over
relatively long periods of time, typically three to five years. Each Fund's
directors believed the Fund's performance was satisfactory. Also, the directors
took into account the investment performance of funds advised by BlackRock
Advisors. Each Board considered comparative information from Lipper which showed
that the performance of the funds advised by BlackRock Advisors was within the
range of performance of comparable funds over different time periods. Each
Fund's Board noted BlackRock's considerable investment management experience and
capabilities, but was unable to predict what effect, if any, consummation of the
Transaction would have on the future performance of the Fund.

Conclusion -- After the independent directors of each Fund deliberated in
executive session, the Fund's entire Board, including the independent directors,
approved the Fund's BlackRock Investment Advisory Agreement, concluding that the
advisory fee rate was reasonable in relation to the services provided and that
the BlackRock Investment Advisory Agreement was in the best interests of the
shareholders. In approving each Fund's BlackRock Investment Advisory Agreement,
the Fund's Board noted that it anticipated reviewing the continuance of the
agreement in advance of the expiration of the initial two-year period.


36              ANNUAL REPORTS                  AUGUST 31, 2006


New BlackRock Sub-Advisory Agreements -- Matters Considered by the Boards

At an in-person meeting held on August 14-16, 2006, each Fund's Board of
Directors, including the independent directors, discussed and approved the
Fund's sub-advisory agreement (each a "BlackRock Sub-Advisory Agreement")
between BlackRock Advisors and its affiliate, BlackRock Investment Management,
LLC (the "Sub-Adviser"). Each Fund's BlackRock Sub-Advisory Agreement became
effective on September 29, 2006, at the same time the Fund's BlackRock
Investment Advisory Agreement became effective.

Pursuant to each Fund's BlackRock Sub-Advisory Agreement, the Sub-Adviser
receives a monthly fee from BlackRock Advisors equal to 59% of the advisory fee
received by BlackRock Advisors from the Fund. BlackRock Advisors pays the
Sub-Adviser out of its own resources, and there is no increase in either Fund's
expenses as a result of the Fund's BlackRock Sub-Advisory Agreement.

In approving each Fund's BlackRock Sub-Advisory Agreement at the August
in-person meeting, the Fund's Board reviewed its considerations in connection
with its approval of the Fund's BlackRock Investment Advisory Agreement in May
2006. Each Fund's Board relied on the same information and considered the same
factors as those discussed above in connection with the approval of the Fund's
BlackRock Investment Advisory Agreement, and came to the same conclusions. In
reviewing the sub-advisory fee rate provided in each Fund's BlackRock
Sub-Advisory Agreement, the Fund's Board noted the fact that both BlackRock
Advisors and the Sub-Adviser have significant responsibilities under their
respective advisory agreements. BlackRock Advisors remains responsible for
oversight of each Fund's operations and administration, and the Sub-Adviser
provides advisory services to the Fund and is responsible for the day-to-day
management of the Fund's portfolio under the Fund's BlackRock Sub-Advisory
Agreement. Each Fund's Board also took into account the fact that there is no
increase in total advisory fees paid by the Fund as a result of the Fund's
BlackRock Sub-Advisory Agreement. Under all of the circumstances, each Fund's
Board concluded that it was a reasonable allocation of fees for the Sub-Adviser
to receive 59% of the advisory fee paid by the Fund to BlackRock Advisors.

After each Fund's independent directors deliberated in executive session, the
Fund's entire Board, including the independent directors, approved the Fund's
BlackRock Sub-Advisory Agreement, concluding that the sub-advisory fee was
reasonable in relation to the services provided and that the BlackRock
Sub-Advisory Agreement was in the best interests of the shareholders.


                ANNUAL REPORTS                  AUGUST 31, 2006               37


Officers and Trustees or Directors



                                                                                                       Number of
                                                                                                       Portfolios in   Other Public
                                                                                                       Fund Complex    Directorships
                           Position(s)  Length of                                                      Overseen by     Held by
                           Held with    Time                                                           Trustee or      Trustee or
Name        Address & Age  Fund         Served   Principal Occupation(s) During Past 5 Years           Director        Director
====================================================================================================================================
Interested Trustee or Director
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                     
Robert C.   P.O. Box 9011  President    2005 to  Vice Chairman and Director of BlackRock, and Global   129 Funds       None
Doll, Jr.*  Princeton, NJ  and Trustee  present  Chief Investment Officer for Equities, Chairman of    174 Portfolios
            08543-9011     or Director           the BlackRock Private Client Operating Committee,
            Age: 52                              and member of the BlackRock Executive Committee
                                                 since 2006; President of the Funds advised by
                                                 Merrill Lynch Investment Managers ("MLIM") and
                                                 its affiliates ("MLIM/FAM-advised funds") from
                                                 2005 to 2006 and Chief Investment Officer thereof
                                                 from 2001 to 2006; President of MLIM and Fund Asset
                                                 Management, L.P. ("FAM") from 2001 to 2006;
                                                 Co-Head (Americas Region) thereof from 2000 to 2001
                                                 and Senior Vice President from 1999 to 2001;
                                                 President and Director of Princeton Services, Inc.
                                                 ("Princeton Services") since 2001; President of
                                                 Princeton Administrators, L.P. ("Princeton
                                                 Administrators") from  2001 to 2006; Chief
                                                 Investment Officer of OppenheimerFunds, Inc. in 1999
                                                 and Executive Vice President thereof from 1991
                                                 to 1999.
            ------------------------------------------------------------------------------------------------------------------------
            *     Mr. Doll is a trustee, director or member of an advisory board of certain other investment companies for which
                  BlackRock acts as investment adviser. Mr. Doll is an "interested person," as defined in the Investment Company
                  Act, of the Fund based on his current and former positions with BlackRock, Inc. and its affiliates. Trustees or
                  Directors serve until their resignation, removal or death, or until December 31 of the year in which they turn 72.
                  As Fund President, Mr. Doll serves at the pleasure of the Board of Trustees or Directors.



38              ANNUAL REPORTS                  AUGUST 31, 2006


Officers and Trustees or Directors (continued)



                                                                                                       Number of
                                                                                                       Portfolios in   Other Public
                                                                                                       Fund Complex    Directorships
                           Position(s)  Length of                                                      Overseen by     Held by
                           Held with    Time                                                           Trustee or      Trustee or
Name        Address & Age  Fund         Served   Principal Occupation(s) During Past 5 Years           Director        Director
====================================================================================================================================
Independent Trustees or Directors*
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                     
Ronald W.   P.O. Box 9095  Trustee      1997 to  Professor Emeritus of Finance, School of Business,    49 Funds        None
Forbes**    Princeton, NJ  or Director  present  State University of New York at Albany since 2000     51 Portfolios
            08543-9095                           and Professor thereof from 1989 to 2000;
            Age: 65                              International Consultant, Urban Institute,
                                                 Washington, D.C. from 1995 to 1999.
------------------------------------------------------------------------------------------------------------------------------------
Cynthia A.  P.O. Box 9095  Trustee      1997 to  Professor, Harvard Business School since 1989;        49 Funds        Newell
Montgomery  Princeton, NJ  or Director  present  Associate Professor, J.L. Kellogg Graduate School of  51 Portfolios   Rubbermaid,
            08543-9095                           Management, Northwestern University from 1985 to                      Inc.
            Age: 54                              1989; Associate Professor, Graduate School of                         (manufac-
                                                 Business Administration, University of Michigan from                  turing)
                                                 1979 to 1985; Director, Harvard Business School
                                                 Publishing since 2005; Director, McLean Hospital
                                                 since 2005.
------------------------------------------------------------------------------------------------------------------------------------
Jean Margo  P.O. Box 9095  Trustee      2004 to  Self-employed consultant since 2001; Counsel of       49 Funds        None
Reid        Princeton, NJ  or Director  present  Alliance Capital Management (investment adviser)      51 Portfolios
            08543-9095                           in 2000; General Counsel, Director and Secretary of
            Age: 61                              Sanford C. Bernstein & Co., Inc. (investment adviser/
                                                 broker-dealer) from 1997 to 2000; Secretary,
                                                 Sanford C. Bernstein Fund, Inc. from 1994 to 2000;
                                                 Director and Secretary of SCB, Inc. since 1998;
                                                 Director and Secretary of SCB Partners, Inc. since
                                                 2000; and Director of Covenant House from 2001 to
                                                 2004.
------------------------------------------------------------------------------------------------------------------------------------
Roscoe S.   P.O. Box 9095  Trustee      2000 to  President, Middle East Institute from 1995 to 2001;   49 Funds        None
Suddarth    Princeton, NJ  or Director  present  Foreign Service Officer, United States Foreign        51 Portfolios
            08543-9095                           Service, from 1961 to 1995 and Career Minister from
            Age: 71                              1989 to 1995; Deputy Inspector General, U.S.
                                                 Department of State, from 1991 to 1994; U.S.
                                                 Ambassador to the Hashemite Kingdom of Jordan from
                                                 1987 to 1990.
------------------------------------------------------------------------------------------------------------------------------------
Richard R.  P.O. Box 9095  Trustee      1997 to  Professor of Finance from 1984 to 1995, Dean from     49 Funds        Bowne & Co.,
West        Princeton, NJ  or Director  present  1984 to 1993 and since 1995 Dean Emeritus of          51 Portfolios   Inc.
            08543-9095                           New York University's Leonard N. Stern School of                      (financial
            Age: 68                              Business Administration.                                              printers);
                                                                                                                       Vornado
                                                                                                                       Realty Trust
                                                                                                                       (real estate
                                                                                                                       company);
                                                                                                                       Alexander's,
                                                                                                                       Inc. (real
                                                                                                                       estate
                                                                                                                       company).
------------------------------------------------------------------------------------------------------------------------------------
Edward D.   P.O. Box 9095  Trustee      2000 to  Self-employed financial consultant since 1994;        49 Funds        None
Zinbarg     Princeton, NJ  or Director  present  Executive Vice President of the Prudential Insurance  51 Portfolios
            08543-9095                           Company of America from 1988 to 1994; Former
            Age: 71                              Director of Prudential Reinsurance Company and
                                                 former Trustee of the Prudential Foundation.
            ------------------------------------------------------------------------------------------------------------------------
            *     Trustees or Directors serve until their resignation, removal or death, or until December 31 of the year in which
                  they turn 72.
            **    Chairman of the Board of Trustees/Directors and the Audit Committee.
------------------------------------------------------------------------------------------------------------------------------------



                ANNUAL REPORTS                  AUGUST 31, 2006               39


Officers and Trustees or Directors (concluded)



                           Position(s)  Length of
                           Held with    Time
Name        Address & Age  Funds        Served   Principal Occupation(s) During Past 5 Years
====================================================================================================================================
Fund Officers*
------------------------------------------------------------------------------------------------------------------------------------
                                     
Donald C.   P.O. Box 9011  Vice         1997 to  Managing Director of BlackRock since 2006; Managing Director of MLIM and FAM from
Burke       Princeton, NJ  President    present  2005 to 2006 and Treasurer thereof from 1999 to 2006; First Vice President of MLIM
            08543-9011     and          and      and FAM from 1997 to 2005; Senior Vice President and Treasurer of Princeton
            Age: 46        Treasurer    1999 to  Services from 1999 to 2006 and Director from 2004 to 2006; Vice President of FAM
                                        present  Distributors, Inc. ("FAMD") from 1999 to 2006 and Director from 2004 to 2006; Vice
                                                 President of MLIM and FAM from 1990 to 1997; Director of Taxation of MLIM from 1990
                                                 to 2001; Vice President, Treasurer and Secretary of the IQ Funds from 2004 to 2006.
------------------------------------------------------------------------------------------------------------------------------------
Kenneth A.  P.O. Box 9011  Senior       2002 to  Managing Director of BlackRock since 2006; Managing Director (Tax-Exempt Fund
Jacob       Princeton, NJ  Vice         present  Management) of MLIM from 2000 to 2006; Director of MLIM from 1997 to 2000.
            08543-9011     President
            Age: 55
------------------------------------------------------------------------------------------------------------------------------------
John M.     P.O. Box 9011  Senior       2002 to  Managing Director of BlackRock since 2006; Managing Director (Tax-Exempt Fund
Loffredo    Princeton, NJ  Vice         present  Management) of MLIM from 2000 to 2006; Director of MLIM from 1997 to 2000.
            08543-9011     President
            Age: 42
------------------------------------------------------------------------------------------------------------------------------------
Timothy T.  P.O. Box 9011  Vice         2004 to  Vice President of BlackRock since 2006; Vice President (Tax-Exempt Fund Management)
Browse      Princeton, NJ  President    present  of MLIM from 2004 to 2006; Vice President, portfolio manager and team leader of
            08543-9011                           the Municipal Investments Team with Lord Abbett & Co. from 2000 to 2003; Vice
            Age: 47                              President and portfolio manager in the municipal fund management group of Eaton
                                                 Vance Management, Inc. from 1992 to 2000.
------------------------------------------------------------------------------------------------------------------------------------
Robert D.   P.O. Box 9011  Vice         1999 to  Director of BlackRock since 2006; Director of MLIM from 2005 to 2006; Vice
Sneeden     Princeton, NJ  President    present  President of MLIM from 1998 to 2005; Assistant Vice President of MLIM from 1994 to
            08543-9011                           1998.
            Age: 52
------------------------------------------------------------------------------------------------------------------------------------
Jeffrey     P.O. Box 9011  Fund Chief   2004 to  Managing Director of BlackRock and Fund Chief Compliance Officer since 2006; Chief
Hiller      Princeton, NJ  Compliance   present  Compliance Officer of the MLIM/FAM-advised funds and First Vice President and Chief
            08543-9011     Officer               Compliance Officer of MLIM (Americas Region) from 2004 to 2006; Chief Compliance
            Age: 54                              Officer of the IQ Funds since 2004; Global Director of Compliance at Morgan Stanley
                                                 Investment Management from 2002 to 2004; Managing Director and Global Director of
                                                 Compliance at Citigroup Asset Management from 2000 to 2002; Chief Compliance
                                                 Officer at Soros Fund Management in 2000; Chief Compliance Officer at Prudential
                                                 Financial from 1995 to 2000; Senior Counsel in the Securities and Exchange
                                                 Commission's Division of Enforcement in Washington, D.C. from 1990 to 1995.
------------------------------------------------------------------------------------------------------------------------------------
Alice A.    P.O. Box 9011  Secretary    2004 to  Director of BlackRock since 2006; Director (Legal Advisory) of MLIM from 2002 to
Pellegrino  Princeton, NJ               present  2006; Vice President of MLIM from 1999 to 2002; Attorney associated with MLIM from
            08543-9011                           1997 to 2006; Secretary of MLIM, FAM, FAMD and Princeton Services from 2004 to
            Age: 46                              2006.
            ------------------------------------------------------------------------------------------------------------------------
            *     Officers of the Funds serve at the pleasure of the Board of Trustees or Directors.
------------------------------------------------------------------------------------------------------------------------------------


Custodian

The Bank of New York
100 Church Street
New York, NY 10286

Transfer Agents

Common Shares or Stock:
The Bank of New York
101 Barclay Street -- 11 East
New York, NY 10286

Preferred Shares or Stock:
The Bank of New York
101 Barclay Street -- 7 West
New York, NY 10286


40              ANNUAL REPORTS                  AUGUST 31, 2006


Proxy Results

BlackRock MuniHoldings Florida Insured Fund

During the six-month period ended August 31, 2006, BlackRock MuniHoldings
Florida Insured Fund`s shareholders voted on the following proposals. Proposals
2 and 3 were approved at a shareholders' meeting on July 31, 2006. A description
of the proposals and number of shares voted were as follows:



------------------------------------------------------------------------------------------------------------
                                                               Shares Voted     Shares Voted    Shares Voted
                                                                   For             Against         Abstain
------------------------------------------------------------------------------------------------------------
                                                                                          
2. To approve a new investment advisory agreement.              18,463,336         447,107         688,012
------------------------------------------------------------------------------------------------------------
3. To approve a contingent subadvisory agreement.               18,489,920         452,012         656,523
------------------------------------------------------------------------------------------------------------


BlackRock MuniHoldings New York Insured Fund, Inc.

During the six-month period ended August 31, 2006, BlackRock MuniHoldings New
York Insured Fund, Inc.`s shareholders voted on the following proposals.
Proposals 2 and 3 were approved at a shareholders' meeting on August 15, 2006. A
description of the proposals and number of shares voted were as follows:



------------------------------------------------------------------------------------------------------------
                                                               Shares Voted     Shares Voted    Shares Voted
                                                                   For             Against         Abstain
------------------------------------------------------------------------------------------------------------
                                                                                          
2. To approve a new investment advisory agreement.              14,410,787         681,913         956,525
------------------------------------------------------------------------------------------------------------
3. To approve a contingent subadvisory agreement.               14,411,905         649,891         987,429
------------------------------------------------------------------------------------------------------------


Investment Objectives

NYSE Symbol       BlackRock MuniHoldings Florida Insured Fund seeks to provide
MFL               shareholders with current income exempt from federal income
                  tax. The Fund also seeks to offer shareholders the opportunity
                  to own shares, the value of which is exempt from Florida
                  intangible personal property tax. The Fund seeks to achieve
                  its investment objective by investing primarily in a portfolio
                  of long-term, investment grade municipal obligations, the
                  interest on which, in the opinion of bond counsel to the
                  issuer, is exempt from federal income taxes and which enables
                  shares of the Fund to be exempt from Florida intangible
                  personal property tax.

NYSE Symbol       BlackRock MuniHoldings New York Insured Fund, Inc. seeks to
MHN               provide shareholders with current income exempt from federal
                  income taxes and New York State and New York City personal
                  income taxes by investing primarily in a portfolio of
                  long-term, investment grade municipal obligations, the
                  interest on which, in the opinion of bond counsel to the
                  issuer, is exempt from federal income taxes and New York State
                  and New York City personal income taxes.


                ANNUAL REPORTS                  AUGUST 31, 2006               41


Availability of Quarterly Schedules of Investments

The Funds file their complete schedules of portfolio holdings with the
Securities and Exchange Commission ("SEC") for the first and third quarters of
each fiscal year on Form N-Q. The Funds' Forms N-Q are available on the SEC's
Web site at http://www.sec.gov. The Funds' Forms N-Q may also be reviewed and
copied at the SEC's Public Reference Room in Washington, DC. Information on the
operation of the Public Reference Room may be obtained by calling
1-800-SEC-0330.

Electronic Delivery

Electronic copies of most financial reports and prospectuses are available on
the Funds' Web site. Shareholders can sign up for e-mail notifications of
quarterly statements, annual and semi-annual reports and prospectuses by
enrolling in the Funds' electronic delivery program.

To enroll:

Shareholders Who Hold Accounts with Investment Advisers, Banks or Brokerages:

Please contact your financial adviser. Please note that not all investment
advisers, banks or brokerages may offer this service.


42              ANNUAL REPORTS                  AUGUST 31, 2006


BlackRock Privacy Principles

BlackRock is committed to maintaining the privacy of its current and former fund
investors and individual clients (collectively, "Clients") and to safeguarding
their nonpublic personal information. The following information is provided to
help you understand what personal information BlackRock collects, how we protect
that information and why in certain cases we share such information with select
parties.

If you are located in a jurisdiction where specific laws, rules or regulations
require BlackRock to provide you with additional or different privacy-related
rights beyond what is set forth below, then BlackRock will comply with those
specific laws, rules or regulations.

BlackRock obtains or verifies personal nonpublic information from and about you
from different sources, including the following: (i) information we receive from
you or, if applicable, your financial intermediary, on applications, forms or
other documents; (ii) information about your transactions with us, our
affiliates, or others; (iii) information we receive from a consumer reporting
agency; and (iv) from visits to our Web sites.

BlackRock does not sell or disclose to nonaffiliated third parties any nonpublic
personal information about its Clients, except as permitted by law or as is
necessary to service Client accounts. These nonaffiliated third parties are
required to protect the confidentiality and security of this information and to
use it only for its intended purpose.

We may share information with our affiliates to service your account or to
provide you with information about other BlackRock products or services that may
be of interest to you. In addition, BlackRock restricts access to nonpublic
personal information about its Clients to those BlackRock employees with a
legitimate business need for the information. BlackRock maintains physical,
electronic and procedural safeguards that are designed to protect the nonpublic
personal information of its Clients, including procedures relating to the proper
storage and disposal of such information.


                ANNUAL REPORTS                  AUGUST 31, 2006               43


These reports, including the financial information herein, are transmitted to
shareholders of BlackRock MuniHoldings Florida Insured Fund and BlackRock
MuniHoldings New York Insured Fund, Inc. for their information. This is not a
prospectus. Past performance results shown in this report should not be
considered a representation of future performance. The Funds have leveraged
their Common Shares or Stock and intend to remain leveraged by issuing Preferred
Shares or Stock to provide the Common Shareholders or Common Stock shareholders
with a potentially higher rate of return. Leverage creates risks for Common
Shareholders or Common Stock shareholders, including the likelihood of greater
volatility of net asset value and market price of shares of the Common Shares or
Stock, and the risk that fluctuations in the short-term dividend rates of the
Preferred Shares or Stock may affect the yield to Common Shareholders or Common
Stock shareholders. Statements and other information herein are as dated and are
subject to change.

A description of the policies and procedures that the Funds use to determine how
to vote proxies relating to portfolio securities is available (1) without
charge, upon request, by calling toll-free 1-800-441-7762; (2) at
www.blackrock.com; and (3) on the Securities and Exchange Commission's Web site
at http://www.sec.gov. Information about how the Funds vote proxies relating to
securities held in the Funds' portfolios during the most recent 12-month period
ended June 30 is available (1) at www.blackrock.com and (2) on the Securities
and Exchange Commission's Web site at http://www.sec.gov.

BlackRock MuniHoldings Florida Insured Fund
BlackRock MuniHoldings New York Insured Fund, Inc.
Box 9011
Princeton, NJ 08543-9011

                                                                       BLACKROCK

                                                                    #MHFLNY-8/06



Item 2 - Code of Ethics - The registrant has adopted a code of ethics, as of the
         end of the period covered by this report, that applies to the
         registrant's principal executive officer, principal financial officer
         and principal accounting officer, or persons performing similar
         functions. A copy of the code of ethics is available without charge at
         www.blackrock.com.

Item 3 - Audit Committee Financial Expert - The registrant's board of directors
         has determined that (i) the registrant has the following audit
         committee financial experts serving on its audit committee and (ii)
         each audit committee financial expert is independent: (1) Ronald W.
         Forbes, (2) Richard R. West, and (3) Edward D. Zinbarg.

Item 4 - Principal Accountant Fees and Services

         (a) Audit Fees -         Fiscal Year Ending August 31, 2006 - $32,600
                                  Fiscal Year Ending August 31, 2005 - $32,000

         (b) Audit-Related Fees - Fiscal Year Ending August 31, 2006 - $3,500
                                  Fiscal Year Ending August 31, 2005 - $3,500

         The nature of the services include assurance and related services
         reasonably related to the performance of the audit of financial
         statements not included in Audit Fees.

         (c) Tax Fees -           Fiscal Year Ending August 31, 2006 - $6,000
                                  Fiscal Year Ending August 31, 2005 - $7,000

         The nature of the services include tax compliance, tax advice and tax
         planning.

         (d) All Other Fees -     Fiscal Year Ending August 31, 2006 - $0
                                  Fiscal Year Ending August 31, 2005 - $0

         (e)(1) The registrant's audit committee (the "Committee") has adopted
         policies and procedures with regard to the pre-approval of services.
         Audit, audit-related and tax compliance services provided to the
         registrant on an annual basis require specific pre-approval by the
         Committee. The Committee also must approve other non-audit services
         provided to the registrant and those non-audit services provided to the
         registrant's affiliated service providers that relate directly to the
         operations and the financial reporting of the registrant. Certain of
         these non-audit services that the Committee believes are a) consistent
         with the SEC's auditor independence rules and b) routine and recurring
         services that will not impair the independence of the independent
         accountants may be approved by the Committee without consideration on a
         specific case-by-case basis ("general pre-approval"). However, such
         services will only be deemed pre-approved provided that any individual
         project does not exceed $5,000 attributable to the registrant or
         $50,000 for all of the registrants the Committee oversees. Any proposed
         services exceeding the pre-approved cost levels will require specific
         pre-approval by the Committee, as will any other services not subject
         to general pre-approval (e.g., unanticipated but permissible services).
         The Committee is informed of each service approved subject to general
         pre-approval at the next regularly scheduled in-person board meeting.

         (e)(2) 0%

         (f) Not Applicable

         (g) Fiscal Year Ending August 31, 2006 - $3,098,500
             Fiscal Year Ending August 31, 2005 - $7,377,027



         (h) The registrant's audit committee has considered and determined that
         the provision of non-audit services that were rendered to the
         registrant's investment adviser and any entity controlling, controlled
         by, or under common control with the investment adviser that provides
         ongoing services to the registrant that were not pre-approved pursuant
         to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible
         with maintaining the principal accountant's independence.

         Regulation S-X Rule 2-01(c)(7)(ii) - $1,739,500, 0%

Item 5 - Audit Committee of Listed Registrants - The following individuals are
         members of the registrant's separately-designated standing audit
         committee established in accordance with Section 3(a)(58)(A) of the
         Exchange Act (15 U.S.C. 78c(a)(58)(A)):

         Ronald W. Forbes
         Cynthia A. Montgomery
         Jean Margo Reid
         Roscoe S. Suddarth
         Richard R. West
         Edward D. Zinbarg

Item 6 - Schedule of Investments - Not Applicable

Item 7 - Disclosure of Proxy Voting Policies and Procedures for Closed-End
         Management Investment Companies -

         Proxy Voting Policies and Procedures

         Each Fund's Board of Directors/Trustees has delegated to Merrill Lynch
         Investment Managers, L.P. and/or Fund Asset Management, L.P. (the
         "Investment Adviser") authority to vote all proxies relating to the
         Fund's portfolio securities. The Investment Adviser has adopted
         policies and procedures ("Proxy Voting Procedures") with respect to the
         voting of proxies related to the portfolio securities held in the
         account of one or more of its clients, including a Fund. Pursuant to
         these Proxy Voting Procedures, the Investment Adviser's primary
         objective when voting proxies is to make proxy voting decisions solely
         in the best interests of each Fund and its shareholders, and to act in
         a manner that the Investment Adviser believes is most likely to enhance
         the economic value of the securities held by the Fund. The Proxy Voting
         Procedures are designed to ensure that the Investment Adviser considers
         the interests of its clients, including the Funds, and not the
         interests of the Investment Adviser, when voting proxies and that real
         (or perceived) material conflicts that may arise between the Investment
         Adviser's interest and those of the Investment Adviser's clients are
         properly addressed and resolved.

         In order to implement the Proxy Voting Procedures, the Investment
         Adviser has formed a Proxy Voting Committee (the "Committee"). The
         Committee is comprised of the Investment Adviser's Chief Investment
         Officer (the "CIO"), one or more other senior investment professionals
         appointed by the CIO, portfolio managers and investment analysts
         appointed by the CIO and any other personnel the CIO deems appropriate.
         The Committee will also include two non-voting representatives from the
         Investment Adviser's Legal department appointed by the Investment
         Adviser's General Counsel. The Committee's membership shall be limited
         to full-time employees of the Investment Adviser. No person with any
         investment banking, trading, retail brokerage or research
         responsibilities for the Investment Adviser's affiliates may serve as a
         member of the Committee or participate in its decision making (except
         to the extent such person is asked by the Committee to present



         information to the Committee, on the same basis as other interested
         knowledgeable parties not affiliated with the Investment Adviser might
         be asked to do so). The Committee determines how to vote the proxies of
         all clients, including a Fund, that have delegated proxy voting
         authority to the Investment Adviser and seeks to ensure that all votes
         are consistent with the best interests of those clients and are free
         from unwarranted and inappropriate influences. The Committee
         establishes general proxy voting policies for the Investment Adviser
         and is responsible for determining how those policies are applied to
         specific proxy votes, in light of each issuer's unique structure,
         management, strategic options and, in certain circumstances, probable
         economic and other anticipated consequences of alternate actions. In so
         doing, the Committee may determine to vote a particular proxy in a
         manner contrary to its generally stated policies. In addition, the
         Committee will be responsible for ensuring that all reporting and
         recordkeeping requirements related to proxy voting are fulfilled.

         The Committee may determine that the subject matter of a recurring
         proxy issue is not suitable for general voting policies and requires a
         case-by-case determination. In such cases, the Committee may elect not
         to adopt a specific voting policy applicable to that issue. The
         Investment Adviser believes that certain proxy voting issues require
         investment analysis - such as approval of mergers and other significant
         corporate transactions - akin to investment decisions, and are,
         therefore, not suitable for general guidelines. The Committee may elect
         to adopt a common position for the Investment Adviser on certain proxy
         votes that are akin to investment decisions, or determine to permit the
         portfolio manager to make individual decisions on how best to maximize
         economic value for a Fund (similar to normal buy/sell investment
         decisions made by such portfolio managers). While it is expected that
         the Investment Adviser will generally seek to vote proxies over which
         the Investment Adviser exercises voting authority in a uniform manner
         for all the Investment Adviser's clients, the Committee, in conjunction
         with a Fund's portfolio manager, may determine that the Fund's specific
         circumstances require that its proxies be voted differently.

         To assist the Investment Adviser in voting proxies, the Committee has
         retained Institutional Shareholder Services ("ISS"). ISS is an
         independent adviser that specializes in providing a variety of
         fiduciary-level proxy-related services to institutional investment
         managers, plan sponsors, custodians, consultants, and other
         institutional investors. The services provided to the Investment
         Adviser by ISS include in-depth research, voting recommendations
         (although the Investment Adviser is not obligated to follow such
         recommendations), vote execution, and recordkeeping. ISS will also
         assist the Fund in fulfilling its reporting and recordkeeping
         obligations under the Investment Company Act.

         The Investment Adviser's Proxy Voting Procedures also address special
         circumstances that can arise in connection with proxy voting. For
         instance, under the Proxy Voting Procedures, the Investment Adviser
         generally will not seek to vote proxies related to portfolio securities
         that are on loan, although it may do so under certain circumstances. In
         addition, the Investment Adviser will vote proxies related to
         securities of foreign issuers only on a best efforts basis and may
         elect not to vote at all in certain countries where the Committee
         determines that the costs associated with voting generally outweigh the
         benefits. The Committee may at any time override these general policies
         if it determines that such action is in the best interests of a Fund.

From time to time, the Investment Adviser may be required to vote proxies in
respect of an issuer where an affiliate of the Investment Adviser (each, an
"Affiliate"), or a money management or other client of the Investment Adviser
(each, a "Client") is involved. The Proxy Voting Procedures and the Investment
Adviser's adherence to those procedures are designed to address such conflicts
of interest. The Committee intends to strictly adhere to the Proxy Voting
Procedures in all proxy matters, including matters involving Affiliates and
Clients. If, however, an issue representing a non-routine matter that is
material to an Affiliate or a widely known Client is involved such that the
Committee does not reasonably believe it is able to follow its guidelines (or if
the particular proxy matter is not addressed by the guidelines) and vote
impartially, the Committee may, in its discretion for the purposes of ensuring
that an independent determination is reached, retain an independent fiduciary to
advise the Committee on how to vote or to cast votes on behalf of the Investment
Adviser's clients.



         In the event that the Committee determines not to retain an independent
         fiduciary, or it does not follow the advice of such an independent
         fiduciary, the powers of the Committee shall pass to a subcommittee,
         appointed by the CIO (with advice from the Secretary of the Committee),
         consisting solely of Committee members selected by the CIO. The CIO
         shall appoint to the subcommittee, where appropriate, only persons
         whose job responsibilities do not include contact with the Client and
         whose job evaluations would not be affected by the Investment Adviser's
         relationship with the Client (or failure to retain such relationship).
         The subcommittee shall determine whether and how to vote all proxies on
         behalf of the Investment Adviser's clients or, if the proxy matter is,
         in their judgment, akin to an investment decision, to defer to the
         applicable portfolio managers, provided that, if the subcommittee
         determines to alter the Investment Adviser's normal voting guidelines
         or, on matters where the Investment Adviser's policy is case-by-case,
         does not follow the voting recommendation of any proxy voting service
         or other independent fiduciary that may be retained to provide research
         or advice to the Investment Adviser on that matter, no proxies relating
         to the Client may be voted unless the Secretary, or in the Secretary's
         absence, the Assistant Secretary of the Committee concurs that the
         subcommittee's determination is consistent with the Investment
         Adviser's fiduciary duties

         In addition to the general principles outlined above, the Investment
         Adviser has adopted voting guidelines with respect to certain recurring
         proxy issues that are not expected to involve unusual circumstances.
         These policies are guidelines only, and the Investment Adviser may
         elect to vote differently from the recommendation set forth in a voting
         guideline if the Committee determines that it is in a Fund's best
         interest to do so. In addition, the guidelines may be reviewed at any
         time upon the request of a Committee member and may be amended or
         deleted upon the vote of a majority of Committee members present at a
         Committee meeting at which there is a quorum.

         The Investment Adviser has adopted specific voting guidelines with
         respect to the following proxy issues:

o     Proposals related to the composition of the Board of Directors of issuers
      other than investment companies. As a general matter, the Committee
      believes that a company's Board of Directors (rather than shareholders) is
      most likely to have access to important, nonpublic information regarding a
      company's business and prospects, and is therefore best-positioned to set
      corporate policy and oversee management. The Committee, therefore,
      believes that the foundation of good corporate governance is the election
      of qualified, independent corporate directors who are likely to diligently
      represent the interests of shareholders and oversee management of the
      corporation in a manner that will seek to maximize shareholder value over
      time. In individual cases, the Committee may look at a nominee's history
      of representing shareholder interests as a director of other companies or
      other factors, to the extent the Committee deems relevant.

o     Proposals related to the selection of an issuer's independent auditors. As
      a general matter, the Committee believes that corporate auditors have a
      responsibility to represent the interests of shareholders and provide an
      independent view on the propriety of financial reporting decisions of
      corporate management. While the Committee will generally defer to a
      corporation's choice of auditor, in individual cases, the Committee may
      look at an auditors' history of representing shareholder interests as
      auditor of other companies, to the extent the Committee deems relevant.

o     Proposals related to management compensation and employee benefits. As a
      general matter, the Committee favors disclosure of an issuer's
      compensation and benefit policies and opposes excessive compensation, but
      believes that compensation matters are normally best determined by an
      issuer's board of directors, rather than shareholders. Proposals to
      "micro-manage" an issuer's compensation practices or to set arbitrary
      restrictions on compensation or benefits will, therefore, generally not be
      supported.

o     Proposals related to requests, principally from management, for approval
      of amendments that would alter an issuer's capital structure. As a general
      matter, the Committee will support requests that enhance the rights of
      common shareholders and oppose requests that appear to be unreasonably
      dilutive.



o     Proposals related to requests for approval of amendments to an issuer's
      charter or by-laws. As a general matter, the Committee opposes poison pill
      provisions.

o     Routine proposals related to requests regarding the formalities of
      corporate meetings.

o     Proposals related to proxy issues associated solely with holdings of
      investment company shares. As with other types of companies, the Committee
      believes that a fund's Board of Directors (rather than its shareholders)
      is best-positioned to set fund policy and oversee management. However, the
      Committee opposes granting Boards of Directors authority over certain
      matters, such as changes to a fund's investment objective, that the
      Investment Company Act envisions will be approved directly by
      shareholders.

o     Proposals related to limiting corporate conduct in some manner that
      relates to the shareholder's environmental or social concerns. The
      Committee generally believes that annual shareholder meetings are
      inappropriate forums for discussion of larger social issues, and opposes
      shareholder resolutions "micromanaging" corporate conduct or requesting
      release of information that would not help a shareholder evaluate an
      investment in the corporation as an economic matter. While the Committee
      is generally supportive of proposals to require corporate disclosure of
      matters that seem relevant and material to the economic interests of
      shareholders, the Committee is generally not supportive of proposals to
      require disclosure of corporate matters for other purposes.

Item 8 - Portfolio Managers of Closed-End Management Investment Companies - as
         of October 2, 2006.

         (a)(1) BlackRock MuniHoldings Florida Insured Fund is managed by a team
         of investment professionals comprised of Robert D. Sneeden, Director at
         BlackRock, Theodore R. Jaeckel, Jr., CFA, Managing Director at
         BlackRock, and Walter O'Connor, Managing Director at BlackRock. Each is
         a member of BlackRock's municipal tax-exempt management group. Mr.
         Jaeckel and Mr. O'Connor are responsible for setting the Fund's overall
         investment strategy and overseeing the management of the Fund. Mr.
         Sneeden is the Fund's lead portfolio manager and is responsible for the
         day-to-day management of the Fund's portfolio and the selection of its
         investments. Messrs. Jaeckel and O'Connor have been members of the
         Fund's management team since 2006 and Mr. Sneeden has been the Fund's
         portfolio manager since 1998.

         Mr. Jaeckel joined BlackRock in 2006. Prior to joining BlackRock, he
         was a Managing Director (Municipal Tax-Exempt Fund Management) of
         Merrill Lynch Investment Managers, L.P. (""MLIM") from 2005 to 2006 and
         a Director of MLIM from 1997 to 2005. He has been a portfolio manager
         with BlackRock or MLIM since 1991.

         Mr. O'Connor joined BlackRock in 2006. Prior to joining BlackRock, he
         was a Managing Director (Municipal Tax-Exempt Fund Management) of MLIM
         from 2003 to 2006 and was a Director of MLIM from 1997 to 2002. He has
         been a portfolio manager with BlackRock or MLIM since 1991.

         Mr. Sneeden joined BlackRock in 2006. Prior to joining BlackRock, he
         was a Director (Municipal Tax-Exempt Fund Management) of MLIM since
         2006 and was a Vice President of MLIM from 1998 to 2006. Mr. Sneeden
         has been a portfolio manager with BlackRock or MLIM since 1994.

         (a)(2) As of October 2, 2006:



                                                                                     (iii) Number of Other Accounts and
                            (ii) Number of Other Accounts Managed                     Assets for Which Advisory Fee is
                                 and Assets by Account Type                                  Performance-Based
                        Other                                                   Other
                      Registered       Other Pooled                           Registered        Other Pooled
(i) Name of           Investment        Investment            Other           Investment         Investment            Other
Portfolio Manager     Companies          Vehicles           Accounts           Companies          Vehicles            Accounts
                   ---------------                                          ---------------
                                                                                                
Robert Sneeden                  12                  0                  0                  0                  0                  0
                   $ 1,710,051,481    $             0    $             0    $             0    $             0    $             0
Theodore R
Jaeckel, Jr                     83                  0                  0                  0                  0                  0
                   $23,310,648,196    $             0    $             0    $             0    $             0    $             0
Walter O'Connor                 83                  0                  0                  0                  0                  0
                   $23,310,648,196    $             0    $             0    $             0    $             0    $             0




         (iv) Potential Material Conflicts of Interest

         BlackRock has built a professional working environment, firm-wide
         compliance culture and compliance procedures and systems designed to
         protect against potential incentives that may favor one account over
         another. BlackRock has adopted policies and procedures that address the
         allocation of investment opportunities, execution of portfolio
         transactions, personal trading by employees and other potential
         conflicts of interest that are designed to ensure that all client
         accounts are treated equitably over time. Nevertheless, BlackRock
         furnishes investment management and advisory services to numerous
         clients in addition to the Fund, and BlackRock may, consistent with
         applicable law, make investment recommendations to other clients or
         accounts (including accounts which are hedge funds or have performance
         or higher fees paid to BlackRock, or in which portfolio managers have a
         personal interest in the receipt of such fees), which may be the same
         as or different from those made to the Fund. In addition, BlackRock,
         its affiliates and any officer, director, stockholder or employee may
         or may not have an interest in the securities whose purchase and sale
         BlackRock recommends to the Fund. BlackRock, or any of its affiliates,
         or any officer, director, stockholder, employee or any member of their
         families may take different actions than those recommended to the Fund
         by BlackRock with respect to the same securities. Moreover, BlackRock
         may refrain from rendering any advice or services concerning securities
         of companies of which any of BlackRock's (or its affiliates') officers,
         directors or employees are directors or officers, or companies as to
         which BlackRock or any of its affiliates or the officers, directors and
         employees of any of them has any substantial economic interest or
         possesses material non-public information. Each portfolio manager also
         may manage accounts whose investment strategies may at times be opposed
         to the strategy utilized for the Fund. In this connection, it should be
         noted that certain portfolio managers currently manage certain accounts
         that are subject to performance fees. In addition, certain portfolio
         managers assist in managing certain hedge funds and may be entitled to
         receive a portion of any incentive fees earned on such funds and a
         portion of such incentive fees may be voluntarily or involuntarily
         deferred. Additional portfolio managers may in the future manage other
         such accounts or funds and may be entitled to receive incentive fees.

         As a fiduciary, BlackRock owes a duty of loyalty to its clients and
         must treat each client fairly. When BlackRock purchases or sells
         securities for more than one account, the trades must be allocated in a
         manner consistent with its fiduciary duties. BlackRock attempts to
         allocate investments in a fair and equitable manner among client
         accounts, with no account receiving preferential treatment. To this
         end, BlackRock has adopted a policy that is intended to ensure that
         investment opportunities are allocated fairly and equitably among
         client accounts over time. This policy also seeks to achieve reasonable
         efficiency in client transactions and provide BlackRock with sufficient
         flexibility to allocate investments in a manner that is consistent with
         the particular investment discipline and client base.



         (a)(3) As of October 2, 2006:

      BlackRock has adopted the compensation program utilized by MLIM for the
remainder of 2006 with respect to portfolio managers of the Fund.

      Portfolio Manager Compensation

      The Portfolio Manager Compensation Program of BlackRock and its
affiliates, including the Investment Adviser, is critical to BlackRock's ability
to attract and retain the most talented asset management professionals. This
program ensures that compensation is aligned with maximizing investment returns
and it provides a competitive pay opportunity for competitive performance.

      Compensation Program

      The elements of total compensation for certain BlackRock and its
affiliates portfolio managers are a fixed base salary, annual performance-based
cash and stock compensation (cash and stock bonus) and other benefits. BlackRock
has balanced these components of pay to provide portfolio managers with a
powerful incentive to achieve consistently superior investment performance. By
design, portfolio manager compensation levels fluctuate--both up and down--with
the relative investment performance of the portfolios that they manage.

      Base Salary

      Under the BlackRock approach, like that of many asset management firms,
base salaries represent a relatively small portion of a portfolio manager's
total compensation. This approach serves to enhance the motivational value of
the performance-based (and therefore variable) compensation elements of the
compensation program.

      Performance-Based Compensation

      BlackRock believes that the best interests of investors are served by
recruiting and retaining exceptional asset management talent and managing their
compensation within a consistent and disciplined framework that emphasizes pay
for performance in the context of an intensely competitive market for talent. To
that end, certain BlackRock and its affiliates portfolio manager incentive
compensation is based on a formulaic compensation program. BlackRock's formulaic
portfolio manager compensation program includes: investment performance relative
to a subset of Florida municipal debt funds over 1-, 3- and 5-year performance
periods and a measure of operational efficiency. Portfolio managers are
compensated based on the pre-tax performance of the products they manage. If a
portfolio manager's tenure is less than 5 years, performance periods will
reflect time in position. Portfolio managers are compensated based on products
they manage. A discretionary element of portfolio manager compensation may
include consideration of: financial results, expense control, profit margins,
strategic planning and implementation, quality of client service, market share,
corporate reputation, capital allocation, compliance and risk control,
leadership, workforce diversity, supervision, technology and innovation. All
factors are considered collectively by BlackRock management.



      Cash Bonus

      Performance-based compensation is distributed to portfolio managers in a
combination of cash and stock. Typically, the cash bonus, when combined with
base salary, represents more than 60% of total compensation for portfolio
managers.

      Stock Bonus

      A portion of the dollar value of the total annual performance-based bonus
is paid in restricted shares of BlackRock stock. Paying a portion of annual
bonuses in stock puts compensation earned by a portfolio manager for a given
year "at risk" based on the company's ability to sustain and improve its
performance over future periods. The ultimate value of stock bonuses is
dependent on future BlackRock stock price performance. As such, the stock bonus
aligns each portfolio manager's financial interests with those of the BlackRock
shareholders and encourages a balance between short-term goals and long-term
strategic objectives. Management strongly believes that providing a significant
portion of competitive performance-based compensation in stock is in the best
interests of investors and shareholders. This approach ensures that portfolio
managers participate as shareholders in both the "downside risk" and "upside
opportunity" of the company's performance. Portfolio managers therefore have a
direct incentive to protect BlackRock's reputation for integrity.

      Other Compensation Programs

      Portfolio managers who meet relative investment performance and financial
management objectives during a performance year are eligible to participate in a
deferred cash program. Awards under this program are in the form of deferred
cash that may be benchmarked to a menu of certain BlackRock mutual funds
(including their own fund) during a five-year vesting period. The deferred cash
program aligns the interests of participating portfolio managers with the
investment results of BlackRock products and promotes continuity of successful
portfolio management teams.

      Other Benefits

      Portfolio managers are also eligible to participate in broad-based plans
offered generally to employees of BlackRock and its affiliates, including
broad-based retirement, 401(k), health, and other employee benefit plans.

      (a)(4) Beneficial Ownership of Securities. As of October 2, 2006, none of
             Messrs. Sneeden, Jaeckel or O'Connor beneficially owns any stock
             issued by the Fund.

Item 9 - Purchases of Equity Securities by Closed-End Management Investment
         Company and Affiliated Purchasers - Not Applicable

Item 10 - Submission of Matters to a Vote of Security Holders - The registrant's
          Nominating Committee will consider nominees to the Board recommended
          by shareholders when a vacancy becomes available. Shareholders who
          wish to recommend a nominee should send nominations which include
          biographical information and sets forth the qualifications of the
          proposed nominee to the registrant's Secretary. There have been no
          material changes to these procedures.



Item 11 - Controls and Procedures

11(a) - The registrant's certifying officers have reasonably designed such
        disclosure controls and procedures to ensure material information
        relating to the registrant is made known to us by others particularly
        during the period in which this report is being prepared. The
        registrant's certifying officers have determined that the registrant's
        disclosure controls and procedures are effective based on our evaluation
        of these controls and procedures as of a date within 90 days prior to
        the filing date of this report.

11(b) - There were no changes in the registrant's internal control over
        financial reporting (as defined in Rule 30a-3(d) under the Act (17 CFR
        270.30a-3(d)) that occurred during the second fiscal half-year of the
        period covered by this report that has materially affected, or is
        reasonably likely to materially affect, the registrant's internal
        control over financial reporting.

Item 12 - Exhibits attached hereto

12(a)(1) - Code of Ethics - See Item 2

12(a)(2) - Certifications - Attached hereto

12(a)(3) - Not Applicable

12(b) - Certifications - Attached hereto

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

BlackRock MuniHoldings Florida Insured Fund


By: /s/ Robert C. Doll, Jr.
    ------------------------------
    Robert C. Doll, Jr.,
    Chief Executive Officer of
    BlackRock MuniHoldings Florida Insured Fund

Date: October 19, 2006

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed below by the
following persons on behalf of the registrant and in the capacities and on the
dates indicated.


By: /s/ Robert C. Doll, Jr.
    ------------------------------
    Robert C. Doll, Jr.,
    Chief Executive Officer of
    BlackRock MuniHoldings Florida Insured Fund

Date: October 19, 2006


By: /s/ Donald C. Burke,
    ------------------------------
    Donald C. Burke,
    Chief Financial Officer of
    BlackRock MuniHoldings Florida Insured Fund

Date: October 19, 2006