Pulverize the vanilla wafers to a fine crumb in a blender or food processor. Add melted butter and pulse just until mixed.
Press cookie crumb mixture into a 9" pie pan. Set in the refrigerator.
Using an electric mixer, in a large bowl, whip together the cream cheese and marshmallow fluff followed by the ice cream. Gently fold in the whipped topping until fully incorporated.
Pour pie filling into prepared crust and freeze until set.
Garnish immediately before serving.
Notes
Calories are automatically generated. For best results calculate based on your exact ingredients.