1 c. butter, melted (2 sticks)
1 box unsifted confectioners' sugar
1 c. graham cracker crumbs
1 1/2 c. peanut butter

Mix together. Put into a buttered 9 x 13 inch container. Put in refrigerator and chill. Melt 6 ounces chocolate chips. Spread over top after chilling. Let set and cut into squares.