Heat oven to 325°F. Grease a 9-inch springform and wrap the base in foil.
Stir crumbs, 2 tbsp sugar, 0.13 tsp salt, and melted butter until evenly moistened.
Press crust into pan bottom. Bake 8–10 minutes. Cool while you make the filling.
Beat cream cheese until smooth and fluffy, scraping bowl as needed.
Mix in granulated sugar and brown sugar until no grit remains.
Blend in peanut butter, sour cream, heavy cream, vanilla, cornstarch, and 0.25 tsp salt.
Add eggs one at a time on low speed until just combined. Do not overmix.
Pour filling over crust. Dollop warm peanut butter and swirl gently with a knife.
Bake 50–55 minutes until edges set and center wobbles slightly.
Turn oven off, crack door, and rest cheesecake 45–60 minutes. Cool completely.
Chill until firm, at least 4 hours or overnight.
Warm ganache cream until steaming. Pour over chocolate chips, wait, then stir smooth.
Spread ganache on chilled cheesecake and shower with chopped peanuts. Slice and serve.