Preheat oven to 350 degrees.
Melt the butter in a 9 x 12 inch baking pan.
Sprinkle the graham cracker crumbs over the butter.
Layer the chocolate chips, peanuts, peanut butter chips, and coconut.
Pour the milk in an even layer on top.
Bake about 40 minutes or until coconut is toasted.
Cool completely and cut into squares.