Preheat oven to 350.
Place 22 Lemon Oreos in a food processor and blend to a fine crumb.
Melt 4 Tbsp butter.
Add Oreo crumbs and butter in a bowl and stir to combine completely.
Press mixture into a 9" pie plate, covering bottoms and sides, forming crust.
Bake for 8-10 minutes.
Remove from oven and cool completely.
Once crust is cooled, fill with softened ice cream up to the rim.
Put back in the freezer to freeze completely.
Add heavy whipping cream, sugar, lemon zest and lemon to a mixing bowl and beat until soft peaks form.
Once frozen, top pie with lemon whipping cream.