01 - Crush chocolate sandwich cookies into fine crumbs using a food processor or place in a resealable bag and crush with a rolling pin. Combine crumbs with melted butter until well mixed. Press mixture firmly into the bottom and up the sides of a 9-inch pie dish. Refrigerate while preparing the filling.
02 - In a large bowl, beat peanut butter, cream cheese, and powdered sugar together until completely smooth and creamy.
03 - In a separate chilled bowl, whip cold heavy cream and vanilla extract using an electric mixer until stiff peaks form.
04 - Gently fold whipped cream into the peanut butter mixture until just combined and smooth. Be careful not to overmix and deflate the cream.
05 - Spread filling evenly into the chilled crust, smoothing the top with a rubber spatula.
06 - Heat 1/4 cup heavy cream until steaming, then pour over chocolate chips in a heat-proof bowl. Let sit for 2 minutes, then stir until completely smooth and glossy.
07 - Spread ganache evenly over the peanut butter filling layer. Sprinkle with chopped salted peanuts if desired.
08 - Refrigerate pie for at least 4 hours or until completely set. Slice and serve chilled.