Crush 26 Mint Oreo cookies into fine crumbs using a food processor.
Mix the crumbs with 5 Tablespoons unsalted butter and press into a 9 inch pie plate to form the crust. Freeze while preparing the filling.
Using a stand mixer fitted with the whisk attachment, or a hand mixer and a large mixing bowl, beat 1 ½ cups heavy cream for several minutes until stiff peaks form. Set aside.
In another bowl, beat 8 ounces cream cheese until smooth. Add 1 ½ cups confectioners sugar, ½ teaspoon mint extract, pinch salt, and green gel food coloring*. Mix until well combined.
Gently fold in the whipped cream.
Pour the mixture into the chilled crust and smooth the top. Freeze for at least 6 hours or overnight.
Before serving, pipe Cool Whip around the edges and garnish with chopped and/or crushed Oreos, if desired.
Notes
*Add enough green food coloring to reach a deeper shade of green than you want the finished color to be because it will lighten when you fold in the whipped cream.Store tightly wrapped in plastic wrap or in an airtight container in the freezer.For easy slicing, remove the pie from the freezer about 10 minutes before serving. Dip a sharp knife in hot water, wipe dry, and slice for best results.