1/2 stick butter
1 c. graham cracker crumbs

Melt butter in pan (or microwave). Take off heat. Add crumbs; mix and pack in 9x9 pan. Pour 1 can condensed milk over graham cracker crumbs. Sprinkle 1 package chocolate chips over condensed milk. Bake at 350 degrees for 25-30 minutes. Won't look done, but take out anyway.