4 1/2 c. quick cooking rolled oats
3/4 c. firmly packed brown sugar
1 c. butter
1/2 c. corn syrup
1/4 c. peanut butter

TOPPING:

6 oz. pkg. semi-sweet chocolate chips
3/4 c. peanut butter

Heat oven to 350 degrees. Generously butter 9 x 13 inch pan. In large bowl, combine bar ingredients; mix well. Press into pan. Bake at 350 degrees for 15 to 25 minutes or until golden brown on edges and set in center. Cool. In small saucepan over low heat, melt topping ingredients, stirring constantly. Spread over bars. Refrigerate 30 minutes. Cut in 36 bars.