Mix peanut butter, confectioners sugar and cream cheese. Fold in cool whip and add vanilla. Stir to combine completely.
Add mixture into Oreo Pie Crust and add your favorite toppings! (Example: Peanut butter cups, chocolate and peanut butter chips, chocolate syrup, peanut butter syrup, crushed Oreos etc)
Chill for at least 2 hours before serving.