Step 1

Oreo Crust: Add the whole Oreo cookies to a food processor and pulse into fine crumbs. Pour the crumbs into a bowl and stir in melted butter. Press mixture evenly and firmly into the bottom and up the sides of a 9in pie dish. Bake at 350 degrees F for 10-12 minutes. Set aside to cool.

Step 2

Grasshopper Pie Filling: In a large saucepan, add marshmallows, 1/3 cup milk and 1/3 cup heavy cream, over medium low heat. Stir constantly until marshmallows are melted. Remove from heat. Stir in creme de Menth, creme de cacao, vanilla and a drop or two of green food coloring. Allow to cool completely.

Step 3

Fold in Whipped Cream: Add remaining 1 cup heavy cream to a mixing bowl and mix with electric whisk beaters until stiff peaks. Spoon whipped cream over to one side of the bowl, and add cooled marshmallow mixture to the open side. Fold gently together, and pour into cooled pie crust.

Step 4

Refrigerate pie for several hours (once the top is set, cover with a piece of parchment).

Step 5

Serve with Oreo crumbs sprinkled on top, and extra piped whipped cream, if desired.