01 - Preheat oven to 350°F. Crush Oreo cookies with filling in a food processor until fine crumbs form. Mix with melted butter until combined. Press the mixture into the bottom and up the sides of a 9-inch pie dish. Bake for 10 minutes, then cool completely.
02 - In a large mixing bowl, beat peanut butter and cream cheese together until smooth. Add powdered sugar and beat until incorporated. In a separate bowl, whip the heavy cream until stiff peaks form, then gently fold it into the peanut butter mixture until completely blended.
03 - Spread the peanut butter filling evenly over the cooled Oreo crust. Refrigerate for at least 2 hours or until fully set.
04 - Whip remaining heavy whipping cream and powdered sugar to stiff peaks. Spread or pipe whipped cream over the chilled pie. Garnish with crushed Oreo cookies.
05 - Slice and enjoy cold. Store leftovers covered in the refrigerator.