2 c. peanut butter, creamy or crunchy
1/2 c. butter, melted
2 3/4 c. powdered sugar

Stir together peanut butter, 1/2 c. butter and powdered sugar. Mixture will be stiff. Press into 9 inch square pan. Spread topping over top of peanut butter mixture. Refrigerate to set chocolate topping. Cut into small squares.

Topping:

12 oz. pkg. chocolate chips
1 tbsp. butter

Melt chocolate chips with 1 Tbsp. butter.