Bake 20 to 25 minutes or until edges are golden brown. Sprinkle chocolate chips over bars; return to oven. Bake 1 minute or until chips soften; spread over bars. Sprinkle with reserved peanuts; press in lightly. Cool 30 minutes in pan on cooling rack. Refrigerate about 25 minutes or until chocolate is set. Cut into 8 rows by 6 rows. Store covered.