Melt 1 stick of butter in a 9x13 pan. Sprinkle 1 1/2 c. of graham cracker crumbs over bottom of pan.
Sprinkle in order over crumbs:
1 c. walnuts (or pecans), chopped
1 (12 oz.) pkg. chocolate chips
1 1/2 c. coconut
Pour 1 can condensed milk over everything. Bake at 325 degrees for 30-35 minutes.
Note: Last year my brother made the "mistake" of combining the butter and graham crackers in a bowl and then pressing into the bottom of the pan. I actually liked it better that way!