Melt 2 sticks of butter. Add 2 cups graham cracker crumbs, 1 cup peanut butter and 2 1/2 cups powdered sugar. Mix well. Push into 9 x 13 x 2 inch pan. Melt 2 cups milk chocolate chips or 1 large chocolate bar and spread over mixture. Add to this 1/4-1/3 bar paraffin wax.