Press to the bottom and sides of a 9-inch pie plate.
Cook for 1 to 3 minutes in the microwave on high until hot. Check every minute to see if it's done. Set aside.
Stir together the creme de menthe and creme de cacao and place in the refrigerator to chill.
In a 3-quart casserole dish, stir together the marshmallows and milk.
Cook the marshmallow mixture in the microwave on high for 3 to 5 minutes or until the marshmallows are melted. Stir every minute.
When finished, place in the refrigerator for 20-30 minutes to chill.
After 20-30 minutes, remove the marshmallow mixture and the liqeuer mixture from the refrigerator and combine with the Cool Whip. Stir until well-blended.