Secret Ingredient No-Egg Brownies

My mom found this recipe in a local newspaper. We changed it around a bit and came up with:

Secret Ingredient No-Egg Brownies

1 Box brownie mix (for our case, free of nuts, eggs, dairy)
1 TBSP Cinnamon (I added less, about 1/2, and it was fine, but bet it would have been fine with the whole TBSP)
1 15 oz can black beans (the secret ingredient!)
(this was the original recipe)
I tossed in a big handful of Enjoy Life Foods mini-chocolate chips :)

Preheat oven to 350 degrees F.

Puree the black beans in blender. You'll see skins, that's OK, you can't tell later. Mix bean puree with brownie mix (don't add the oil, egg, etc that the brownie box calls for - just use the powder mix). Throw in the chocolate chips and stir. Pour all into a greased 8x8 cake pan (although we used a similar sized pie plate.

Cook at 350 30-35 minutes or until a toothpick inserted in center comes out clean. The chips made it pretty gooey, but we liked it that way. :)

Enjoy!

(Thanks Lisa for noticing I didn't say what size can of beans - I responded in my comment section) :)