3/4 cup graham cracker crumbs
1/2 cup butter or margarine, melted
2 cups confectioners' sugar
1/2 cup chunky peanut butter
1 cup semisweet chocolate chips
In a bowl, combine cracker crumbs and butter; mix well. Stir in sugar and peanut butter. Press into a greased 8-in. square pan.
In a microwave or double boiler, melt the chocolate chips and stir until smooth. Spread over peanut butter layer. Chill for 30 minutes; cut into squares. Chill until firm, about 30 minutes longer. Store in the refrigerator.