1. Prepare the Crust:

1. In a bowl, mix crushed Oreos with melted butter until well combined. Press into the bottom of a 9-inch springform pan to form the crust. Chill for 15 minutes.
2. In a large bowl, beat cream cheese until smooth. Add peanut butter, powdered sugar, and vanilla extract, mixing until fully incorporated.
3. In a separate bowl, whip the heavy cream until stiff peaks form. Gently fold the whipped cream into the peanut butter mixture until smooth.
4. Pour the filling over the chilled crust and spread evenly. Garnish with additional Oreo cookies if desired.
5. Refrigerate for at least 4 hours or overnight before serving.