In a large mixing bowl, using a hand or stand mixer, mix the whipped cream until peaks form on high speed, approximately 2 minutes until stiff peaks form. Set aside. ½ cup (120 ml) heavy cream
In a separate large mixing bowl, using a hand or stand mixer, beat the cream cheese and powdered sugar on high until well combined and fluffy, about 3 minutes. Scrape the sides and bottom of the bowl several times to ensure that the cream cheese is beaten evenly. 24 ounces (three 8-ounces) packages of cream cheese 1 ½ cups (170 g) powdered sugar
Add peanut butter, sour cream, and vanilla and continue beating until smooth, thick, and creamy, about 2 more minutes. Continue scraping the sides and bottom of the bowl with a spatula as needed. 1 cup (270 g) creamy peanut butter ¾ cup (170 g) sour cream 1 teaspoon vanilla extract
Gently fold the whipped cream into the cream cheese mixture using a spatula. Do this in two batches, mixing in ½ of the cream until well combined and then the second half.
Using a spatula, spread the cheesecake filling evenly across the bottom of the Oreo crust, ensuring you scrape the sides of the bowl to get all the filling.
Cover the pan again with plastic wrap and place in the refrigerator for at least 6 hours or overnight.