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 mixture into bottom and up 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 heavy cream until stiff peaks form, then gently fold into peanut butter mixture until completely blended.
03 - Spread peanut butter filling evenly over 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 chilled pie. Garnish with crushed Oreo cookies.
05 - Slice and enjoy cold. Store leftovers covered in refrigerator.