1 pkg. white cake mix
1/3 c. Creme de Menthe (green)
1 reg. tub Cool Whip
1 sm. can chocolate syrup

Mix cake per instructions, leaving out some water and adding Creme de Menthe. Bake per package and cool.

On cool cake, pour chocolate syrup to cover top. Mix some Creme de Menthe (to taste) in Cool Whip and frost with Cool Whip mixture.