In a mixing bowl, combine graham cracker crumbs and melted butter. Mix until the crumbs are evenly coated.
Press the mixture firmly into the bottom of a 9-inch springform pan to create the crust. Bake for 10 minutes, then allow to cool while you prepare the filling.
In a large mixing bowl, beat the softened cream cheese and peanut butter together until smooth and creamy.
Gradually add in the powdered sugar and vanilla extract, mixing well until fully combined.
Gently fold in the whipped cream until the mixture is light and fluffy.
Stir in the chopped mini peanut butter cups evenly throughout the cheesecake mixture.
Pour the creamy filling over the cooled graham cracker crust, spreading it out evenly.
Refrigerate the cheesecake for at least 4 hours or overnight for best results.
Once set, remove the cheesecake from the springform pan. Drizzle with chocolate sauce and garnish with additional mini peanut butter cups as desired.