Chocolate Creme de Menthe Cake

1 (18.25 ounce) box white cake mix
7 tablespoons green cr?me de menthe liqueur
1 (8 ounce) container Cool Whip?, thawed
1 can hot fudge topping

Make cake according to package directions, except substitute 4 tablespoons green cr?me de menthe for the water. A small amount of green food coloring may be added now, if desired. Bake according to package directions and cool.

Stir fudge topping before using. Frost cooled cake with fudge topping. Let sit for 10 minutes.

Stir remaining 3 tablespoons cr?me de menthe into Cool Whip? and mix well. Use this mixture to frost cake a second time. Refrigerate cake.

The cake may be garnished with chocolate leaves or chocolate curls if desired.