Chocolate Trifle
["1 chocolate fudge cake mix (18 1/4 oz.)", "1 (6 oz.) pkg. instant chocolate pudding mix", "1/2 c. strong coffee", "1 (12 oz.) carton frozen whipping topping, thawed", "6 Heath or Skor bars (1.4 oz. each), crushed"]
["Bake cake according to package directions.", "Cool.", "Prepare pudding according to package directions. Set aside."]
["chocolate", "instant chocolate pudding mix", "coffee", "frozen whipping topping"]