1 1/2 sticks melted butter
2 c. graham cracker crumbs
2 c. powdered sugar
3/4 c. peanut butter
12 oz. chocolate chips

Mix with wooden spoon the first 4 ingredients. Press into 9x9 inch pan. Refrigerate while preparing chocolate. Pour 12 oz. melted chocolate chips on top of peanut butter mix and spread. Refrigerate 15 minutes. Cut. Return to refrigerator.