1. In food processor bowl or blender container combine eggs, peanut butter and vanilla. Cover and process until combined.
2. Add beans, KELLOGG’S FROSTED MINI WHEATS Original cereal and baking powder. Process for 1 to 2 minutes or until smooth. Add brown sugar and cocoa powder. Press until combined.
3. Spread in 8 x 8 x 2-inch baking pan coated with cooking spray. Bake at 350°F for 23 to 28 minutes or until a knife inserted near center comes out clean. Cool on wire rack. Cut into 2-inch squares to serve. Sprinkle with powdered sugar (if desired).