1/2 c. butter
1 1/2 c. graham cracker crumbs
1 (14 oz.) can sweetened condensed milk
1 (6 oz.) pkg. chocolate chips
1 c. coconut
1 c. chopped nuts (optional)

Preheat oven to 350 degrees (325 degrees for glass pan). In 13 x 9 inch baking pan, melt butter; sprinkle graham cracker crumbs over butter. Pour sweetened milk over crumbs evenly. Top evenly with remaining ingredients. Bake 25 to 30 minutes or until lightly brown; cool thoroughly before cutting.