Preheat oven to 350 F. Combine all ingredients except chips in a good food processor, and blend until completely smooth. Really blend well. (A blender can work if you absolutely must, but the texture—and even the taste—will be much better in a food processor.)

Stir in the 1/2 cups chocolate chips, then pour into a greased 8×8 pan. Sprinkle 1/2 cup chocolate chips over the top. Of course, you can add more if desired! Cook the black bean brownies about 15 minutes, then let cool at least 10 minutes before trying to cut. Makes 9-12 brownies.