--PB Layer--
2 sticks butter
2 1/2 c. crushed graham crackers
1 3/4 c. confectioners' sugar
1 c. peanut butter
--TOPPING--
12 oz. pkg. chocolate chips
1 tbsp. butter
Melt butter and mix all PB layer ingredients together. Spread in 13 x 9 inch buttered pan. Melt chocolate bits with butter in double boiler or microwave. Smooth over top. Refrigerate and cut into squares.