1 1/2 c. graham cracker crumbs
1/2 lb. melted butter
1 c. peanut butter (plain or with nuts)
3/4 lb. powdered sugar
1 lg. (12 oz.) pkg. chocolate chips

Melt butter in small saucepan. In a small bowl, mix graham cracker crumbs, butter, peanut butter and powdered sugar until smooth. Press into 9 x 13 inch pan.

Melt chocolate chips and pour over top of peanut butter mixture. Let set. Cut into squares and serve in cupcake papers.