1 pkg. white cake
1 can fudge topping
5 tbsp. green creme de menthe
1 (8 oz.) carton Cool Whip
1 chocolate bar

Prepare and bake cake mix according to package directions, substituting 3 tablespoons creme de menthe for 3 tablespoons water. Cool. Spread fudge topping on cake. Top with Cool Whip and 2 tablespoons creme de menthe mixed together. Shave chocolate bar over top; refrigerate.