CRUST:

24 Oreo cookies, finely crushed
1/4 c. butter, melted

FILLING:

1/4 c. green creme de menthe (or grasshoppers)
1 lg. jar marshmallow creme
2 c. heavy cream, whipped or 2 pkgs. Dream Whip, whipped or 16 oz. Cool Whip

Combine cookie crumbs and butter. Press into 9" spring pan or regular pie pan. Reserve 1/2 cup to sprinkle on top of finished pie.

Add creme de menthe to marshmallow creme. Mix until blended. Fold in whipped cream. Pour into pan. Sprinkle with crumbs. Freeze for several hours.