In a mixing bowl, combine the crushed chocolate sandwich cookies and melted butter. Mix well until the crumbs are evenly coated.
Press the mixture firmly into the bottom and up the sides of a 9-inch pie dish to form the crust. Set it aside.
In a large bowl, use an electric mixer to combine the peanut butter, powdered sugar, and softened cream cheese until smooth and creamy.
Gently fold the whipped cream into the peanut butter mixture using a rubber spatula until fully combined.
Pour the peanut butter filling into the prepared crust, spreading it evenly. Refrigerate while making the topping.
In a small saucepan, heat the 1/2 cup heavy cream over medium heat until it just begins to simmer.
Remove from heat and stir in the chocolate chips until melted and smooth.
Pour the chocolate topping over the peanut butter filling, spreading it gently to cover the surface completely.
Refrigerate the pie for at least 4 hours or until set. For best results, chill overnight.
Once set, slice and serve chilled.