2 c. quick cooking oats
1/2 c. butter, softened
1/3 c. brown sugar, packed
1/4 c. light corn syrup

FROSTING:

1/3 c. semi-sweet chocolate chips
2 tbsp. peanut butter

Combine oats and butter in glass mixing bowl; microwave uncovered on high for 3-4 minutes or until heated through. Stir in brown sugar and corn syrup. Microwave uncovered on high for 1 1/2 to 2 1/2 minutes or until sugar is dissolved. press evenly into greased, 10 x 6 inch baking dish. Place chocolate chips in 1 cup glass measure; microwave uncovered on high for 1 1/2 to 2 1/2 minutes or until chocolate is glossy - stir until smooth. Blend in peanut butter, spread over warm bars. Refrigerate until chocolate is set. Cut into squares.