28 lg. marshmallows
1/2 c. milk
4 tbsp. creme de menthe syrup
1/3 stick butter
18 Oreo cookies, crushed
1 c. heavy cream, whipped

Combine marshmallows and milk in a double boiler; cook until dissolved. Cool; add creme de menthe. Cool thoroughly. Combine cookies and butter; mix well. Press into 8-inch pie pan.

Fold whipped cream into marshmallow mixture; pour into pie shell. Sprinkle with more crumbs; chill. (A few drops of green food color may be added to filling to make it more of a green color.)