Hi Dorothy, I hope this might be what you're looking for:
Grasshopper Pie
CRUST:
14 Whole Oreo Cookies
2 tbsp butter, melted

FILLING:
24 Regular size marshmallows
1/2 cup milk
1 cup whipping cream
4 tbsp creme de menthe (green)
2 tbsp creme de cacao

CRUST: Combine cookies and butter. Press firmly into bottom of 9" square pan; chill.
FILLING: Heat marshmallows and milk in saucepan over medium heat until marshmallows melt, or microwave on high 2-3 minutes. Cool until thickened. Whip cream to stiff peaks. Fold marshmallow mixture and liqueurs into cream. Pour over crust. Freeze overnight. Let stand at room temperature 10 minutes before serving.
HELPFUL HINTS: Can freeze for up to one week. Instead of using liqueurs, substitute peppermint extract (to taste) and green food colouring, adding a few drops at a time until desired colour. Garnish with mint leaves, additional crushed Oreo cookies, or shavings from a frosted mint candy bar.