Prepare the Crust:
Line a muffin tin with paper or silicone liners.
In a mixing bowl, combine the chocolate cookie crumbs and melted butter until the texture resembles wet sand.
Divide the crust mixture evenly among the liners, pressing it down firmly to create the base. Place the tin in the freezer to set while preparing the filling.
Make the Peanut Butter Filling:
In a large mixing bowl, beat the peanut butter, cream cheese, powdered sugar, and vanilla extract with an electric mixer until smooth and creamy.
Gently fold in the whipped cream until fully incorporated, creating a light and fluffy filling.
Assemble the Mini Pies:
Remove the muffin tin from the freezer. Spoon the peanut butter filling over the crusts, smoothing the tops with a spatula.
Refrigerate the pies for at least 2 hours, or until firm.
Add the Topping:
Once the pies are chilled and set, drizzle melted chocolate over the tops and sprinkle with crushed peanuts or mini chocolate chips, if desired.
Serve:
Carefully remove the pies from the liners and serve chilled.