1 small package of oreo cookies crushed
1/4 cup margarine melted
1/4 cup creme de menthe
1 7oz jar marshmellow cream
1/2 pint heavy cream whipped
Mix crushed cookies and margarine. Spread 1/2 mixture in a baking dish.
Whip heavy cream until peaks form. Blend in marshmellow and finally creme de menthe.
Spread marshmellow mixture over cookie mixture.
Top with remaining cookie mixture. Freeze overnight.