To a large mixing bowl, add crushed oreos, melted butter and salt. Mix until thoroughly combined
Press into an even layer into the bottom and up the sides of a 9-inch pie pan. Place in the freezer while you prepare the filling
In the bowl of a stand mixer with the paddle or whisk attachment affixed (or in a large mixing bowl with a hand mixer), add the heavy cream. Start on low and gradually increase speed until soft peaks form, about 3-4 minutes. Stop the mixer and add in the Nutella and salt. Continue whipping until stiff peaks form, another 2-3 minutes. Scrape bottom and sides of the bowl and whip again to ensure all has been evenly incorporated
Spread the nutella whipped cream on top of the cold crust. Freeze for about 2 hours or overnight. Remove from the freezer about 10 minutes before serving. Cut into slices and serve with whipped cream and crushed oreos, if desired
Notes
Store in freezer, wrapped tightly with plastic wrap, up to 2 weeks
Remove from the freezer about 10 minutes before serving