1/2 c. butter or margarine
1 1/2 c. graham cracker crumbs
1 14 oz. can sweetened condensed milk
1 12 oz. pkg. choc. chips
1 c. peanut butter chips

Preheat oven to 350. (Glass dish 325). In 13 x 9 inch baking dish, melt butter in oven. Sprinkle crumbs evenly over butter; pour sweetened condensed milk over crumbs. Top with chips. Press down firmly. Bake for 25 to 30 minutes or until lightly browned. Cool and cut into bars.