Crush graham crackers or cookies into fine crumbs
Mix crumbs with melted butter and press into a pie dish
Chill or bake the crust until set
Beat cream cheese until smooth
Add peanut butter and mix until combined
Add powdered sugar and mix until creamy
Fold in whipped topping or whipped cream
Spread the filling evenly into the crust
Smooth the top with a spatula
Chill the pie for several hours until firm
Top with whipped cream, chopped peanuts, or chocolate shavings if desired
Slice and serve cold