Prepare Your Crispy Crust: First, gently crush your chosen cookies in a food processor until they're fine crumbs. In a medium bowl, combine these crumbs with the melted butter, stirring until everything is evenly moistened. Press this mixture firmly into the bottom and slightly up the sides of a 9-inch deep dish pie pan. Pop the pan into the freezer to chill while you get the filling ready.
Create the Creamy Filling: In a large mixing bowl, beat together the softened cream cheese, granulated sugar, and one cup of the marshmallow fluff until the mixture is wonderfully smooth. Next, add one cup of the creamy peanut butter and continue beating until it’s fully incorporated and luscious.
Fold in Lightness: In a separate, smaller bowl, gently fold the powdered sugar into four ounces of Cool Whip until combined. Now, carefully fold this lighter Cool Whip mixture into your peanut butter and cream cheese blend. This helps keep the filling airy!
First Chill: Spoon the rich filling into your chilled cookie crust, spreading the top smoothly and evenly. Cover the pie tightly with plastic wrap and refrigerate for 30 minutes to let it set slightly.
Top with Fluffy Cloud: Take the remaining one cup of marshmallow fluff and gently fold it into the remaining Cool Whip. Spread this fluffy, sweet topping over the chilled pie filling.
The Big Chill: Cover your pie snugly with plastic wrap and return it to the refrigerator for at least 6 hours, or ideally, overnight. This setting time is super important for perfect slices!
Decorate and Enjoy: Just before serving, scatter the mini marshmallows over the top of the pie. Warm the remaining ½ cup of peanut butter in a small microwave-safe bowl for about 30 seconds, stir until it’s pourable, and then artfully drizzle it over the marshmallows. Finally, sprinkle your crumbled Nutter Butter cookies for that irresistible extra crunch. Slice and serve this amazing, no-bake dessert!