Chocolate Delight

Cut chocolate cake into large squares and place on a baking sheet or large baking dish (see Cook's Note). Pour coffee-flavored liqueur over cake and set aside. Prepare chocolate pudding with milk according to package directions.

In large trifle bowl or other glass bowl crumble half of liqueur-moistened cake. Top cake with half of chocolate pudding half of crumbled candy bars and one container of whipped topping. Repeat with remaining cake pudding candy bars and Cool Whip®. Shave chocolate with a vegetable peeler for garnish; sprinkle over top of dessert. Keep refrigerated until serving.