1 c Melted Margarine 1 c Peanut butter 2 c Graham cracker crumbs 2 1/2 c Powdered sugar 12 oz Chocolate chips Mix first 4 ingredients and put into a greased 9 by 13 inch pan. Melt chips and spread over bars. Ready to eat. ( Does not need baking). Cut into bars. Yield: 24 to 30.