Make the crust: Finely crush Nutter Butters in a food processor. Stir in melted butter and press into the bottoms and sides of a 9” pie plate. Chill until ready to use.
Make the whipped cream: Whip heavy cream and brown sugar in an electric mixer using whisk and a cold bowl until peaks form. Chill until ready to use.
Make the Nutella layer: Beat Nutella, cream cheese, and brown sugar with a hand mixer until combined. Fold in 1/3 of the whipped cream. Spread in the prepared crust and chill until ready to add the next layer.
Make the peanut butter layer: Beat peanut butter, cream cheese, and brown sugar with a hand mixer until creamy. Fold in the remaining 2/3 whipped cream. Spread over Nutella layer. Garnish with mini Nutter Butters, if desired.
This pie is good chilled or room temperature, but it is even better frozen! Cover with plastic wrap and store in refrigerator or freezer until ready to eat.