Cream butter and brown sugar in mixer or food processor. Add egg and maple flavoring. Stir in flour and salt. Mix until thick and smooth. Transfer to mixing bowl if using processor. Stir in Rice Krispies. Turn into lightly greased 9-inch-square pan. Spread smooth with spatula. Evenly sprinkle Bits oBrickle over surface. Bake on center rack of 350 degree oven until browned around edges and also ( although somewhat lighter ) over entire surface, about 25 to 28 minutes. Let cool 10 minutes on rack. Using pizza cutter, divide into squares. Use sharp knife along edges to complete cutting squares. Can be stored in airtight container up to 1 week. Makes 25 ( 1-3/4 - inch ) squares. Each square contains about: 109 calories; 30 mg sodium; 22 mg cholesterol; 5 grams fat; 16 grams carbohydrates; 1 gram protein; 0.04 gram fiber. cook 020