1/2 c. butter
1 1/2 c. graham cracker crumbs
1 (14 oz.) can Eagle Brand sweetened condensed milk (NOT evaporated milk)
1 (12 oz.) pkg. semi-sweet chocolate chips
1 c. peanut butter chips

Preheat oven to 350 degrees (325 degrees for glass dish). In 13x9 inch baking pan, melt butter in oven. Sprinkle crumbs evenly over butter. Pour condensed milk evenly over crumbs. Top with chips; press down firmly. Bake 25-30 minutes or until lightly browned. Cool. Cut into bars.