Chocolate crunch peanut butter bars

Found this recipe on a cake mix box, and took it to potluck today. I came home with none :(

base:
1 pkg (18.25 oz) Pillsbury Moist Supreme Golden Butter Recipe Cake Mix
1 C crunchy peanut butter
1/3 c water
1 egg

topping:
1 pkg (6oz) semisweet chocolate chips
1/2 c crunchy peanut butter
1 1/2 c slightly crushed cornflakes cereal

1. Heat oven to 375 degrees. In large bowl combine all base ingredients at low speed until well blended. Press evenly in ungreased 15x10x1 inch baking pan. Bake 375 for 13-18 minutes or until light golden brown. Cool slightly.

2. In medium saucepan melt chocolate chips over low heat, stirring constatnly. Stir in 1/2 c peanut butter and cereal. Spread over slightly cooled base. Refrigerate to set topping; cut into bars.

36 bars.

I added chocolate chips to the base, then created my own chocolate/pb mix without the cereal, and it was yummy.