Prepare the Crust:

1. Preheat your oven to 400°F (200°C).
2. In a mixing bowl, combine crushed vanilla wafer cookies, melted butter, and sugar.
3. Press the mixture evenly into the bottom and sides of a 9-inch buttered pie plate using the bottom of a measuring cup.
4. Bake the crust for 10 minutes, then transfer it to a wire rack to cool completely.

Prepare the Filling:

1. In a large mixing bowl, beat the peanut butter and softened cream cheese with an electric mixer on medium speed until smooth.
2. Add the sifted confectioners’ sugar and mix until incorporated.
3. Slowly add the cold heavy cream while mixing on low speed until just combined.
4. Increase to high speed and beat until the mixture thickens, being careful not to overmix.
5. Transfer the filling into the cooled pie crust and spread it out evenly.
6. Cover and chill in the refrigerator for a minimum of 4 hours, or ideally, overnight.
7. Before serving, top with whipped cream and chopped peanuts for garnish.