1/2 Cup margarine or butter 1 1/2 Cups graham cracker crumbs 1 (14 Oz.) Can sweetened condensed milk 1 (12 Oz.) Pac milk chocolate chips 1 Cup peanut butter chips Preheat oven to 350 degrees (325 degrees for glass dish). In 13 x 9 inch baking pan, melt margarine in oven. Sprinkle crumbs evenly over margarine; pour sweetened condensed milk evenly over crumbs. Top with chips; press down firmly. Bake 25 to 30 minutes or until lightly browned. Cool. Cut into bars.