01 -
Lightly grease a 9-inch springform pan. Line the bottom with parchment if you want easier serving.
02 -
Pulse the chocolate sandwich cookies into fine crumbs. Mix with melted butter and salt until the crumbs look like damp sand. Press firmly into the bottom and slightly up the sides of the pan. Chill for 20 minutes.
03 -
Beat the cold heavy cream in a chilled bowl until stiff peaks form, about 2-3 minutes. Set aside in the refrigerator.
04 -
Beat the softened cream cheese and powdered sugar until smooth and fluffy, about 2-3 minutes. Add peanut butter, sour cream, vanilla, and salt. Beat until thick and fully combined.
05 -
Fold the whipped cream into the peanut butter mixture in two additions. Keep folding gently until no white streaks remain.
06 -
Spread the filling evenly into the chilled crust. Cover and refrigerate for at least 6 hours, or overnight, until firm enough to slice.
07 -
Spread room-temperature fudge sauce over the chilled cheesecake. Sprinkle with chopped peanut butter cups or peanuts. Run a knife around the edge, remove the pan ring, and slice with a warm clean knife.