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 chips, then pour into a greased 8×8 pan. Optional: sprinkle extra chocolate chips over the top. Cook 15-18 minutes, then let cool at least 10 minutes before trying to cut. Makes 9-12 brownies.