Preheat the oven to 350F and grease a 9" pie plate. Combine the Oreo crumbs and melted butter in a medium bowl, stir together, and firmly and evenly press the crust into the prepared pie plate along the bottom and up the sides. Try using a glass with a flat bottom for best results. Bake for 7-8 minutes and carefully remove from the oven. Set aside to cool.

In a large bowl beat the cream cheese with an electric mixer until smoooth. Add the peanut butter, vanilla and sugar and continue to beat until smooth.

In a separate medium bowl with high sides beat the whipping cream on high until it forms stiff peaks (careful not to over-beat it). Fold the whipped cream into the cream cheese mixture and transfer the mixture into the prepared crust. Using a rubber spatula, smooth the filling into an even layer in the crust.

Chill the pie in the fridge for at least 2 hours or overnight (carefully covered with wrap if more than a couple hours). When ready to serve, drizzle the top with the melted chocolate, sprinkle with crushed peanuts and the flaked salt and serve chilled.