1Grease a 10x15 inch pan. In a large bowl, combine 1 1/2 cups melted margarine, peanut butter, confectioners' sugar and graham cracker crumbs. Spread in prepared pan.
2Combine 1/2 cup margarine and chocolate chips in a medium saucepan over medium-low heat. Stir occasionally until melted and smooth. Spread over peanut butter mixture. Let cool completely before cutting into bars.
Footnotes
Tip
Aluminum foil can be used to keep food moist, cook it evenly, and make clean-up easier.