1/2 cup butter, melted
1 1/2 cups graham cracker crumbs
1 (14-oz) can sweetened condensed milk
1 (12-oz) pkg milk chocolate chips
1 cup peanut butter chips
Preheat oven to 350 degrees. Combine the butter and graham cracker crumbs and pat into a greased 9 x 13" pan. Pour the sweetened condensed milk over the crust. Sprinkle with the chocolate and peanut butter chips. Press down lightly. Bake 350 degrees for 25-30 minutes. Cool completely before cutting into bars.