Prepare the crust by mixing the chocolate cookie crumbs and melted butter.
Press the mixture firmly into the bottom and sides of a pie dish.
In a large bowl, beat together the softened cream cheese and peanut butter until smooth.
Add the powdered sugar and vanilla extract, mixing until well combined.
In another bowl, whip the heavy cream until stiff peaks form.
Gently fold the whipped cream into the peanut butter mixture.
Pour the filling into the prepared crust and smooth the top.
Chill the pie in the refrigerator for at least 4 hours or overnight.
Before serving, add chocolate shavings or sauce on top if desired.