3/4 c. graham cracker crumbs (about 12 squares)
1/2 c. butter, melted
2 c. confectioners sugar
1/2 c. chunky peanut butter
1 c. (6 oz.) semi-sweet chocolate chips

In a bowl, combine cracker crumbs and butter; mix well. Stir in sugar and peanut butter. Press into greased 8-inch 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 in squares. Chill until firm, about 30 minutes longer. Store in refrigerator.