Make the crust: In a food processor or a Ziploc bag crush the cookies into fine crumbs. Add melted butter and pulse until combined. Press the mixture into the bottom and up the sides of a 9-inch (23cm) tart pan with a loose base. Refrigerate while preparing the filling.
In a large bowl beat peanut butter and cream cheese until combined and smooth. Add powdered sugar, vanilla extract and beat until combined and smooth.
In a separate bowl, whip heavy cream to stiff peaks. Gently fold into the cream cheese mixture.
Evenly spread over the crust and refrigerate overnight.
Before serving, drizzle some melted chocolate and sprinkle chopped peanuts
NOTES:
Keep in the fridge, covered, up to 5 days.
Instead of Oreo cookies, you can use digestive cookies or any other biscuits.
The topping is optional. You can use any topping that you like.