Coconut topped chocolate cake

1 pk German chocolate cake mix
      4    Snickers candy bars;
           - finely chopped
    1/4 c  butter
    1/2 c  Flaked coconut
 
  Grease and flour a 13x9 baking pan. Prepare cake mix
  according to package directions. Pour into prepared
  baking pan. Bake as directed. In a small saucepan,
  combine chopped candy and butter. Melt over low heat,
  stirring until smooth. Remove baked cake from oven and
  immediately spread chocolate mixture over top.
  Sprinkle with coconut. Cool.