Low-Fat Brownies?

Made these low fat brownies last night. I was very apprehensive, but they were actually very good. Dense and fudgy! Can you guess the secret ingredient?




Black Beans!
It's a super easy recipe. Buy a brownie box mix. I used a regular sized can of black beans. Thoroughly rinse the black beans in a colander, and then put back in the can, and fill with water to the top. Place in your blender (I used my Magic Bullet) and puree till smooth. Pour into your dry brownie mix and blend well. Pour into a greased 9x13 pan and bake. I set the temperature at 325 degrees because I used my darker pan, and at about 15 minutes I started checking them. I think it took about 17 minutes to bake.
Served them at my Ladies Bible Study ~ and they were a hit. We had a fun guessing game with it!