01 -
Grease a 9-inch springform pan thoroughly to ensure easy release.
02 -
Combine graham cracker crumbs and melted butter until evenly coated. Press mixture firmly and evenly into the pan bottom using the base of a glass for compaction.
03 -
Spread melted dark chocolate evenly over the crust. Refrigerate for 10 minutes to set.
04 -
Beat softened cream cheese and sugar with an electric mixer until smooth, about 3 minutes. Add eggs one at a time, mixing fully after each addition. Blend in vanilla extract, sour cream, and heavy cream just until combined to avoid incorporating air.
05 -
Pour filling over crust and smooth the surface. Bake at 325°F (163°C) for 55–65 minutes until edges are set and center jiggles slightly.
06 -
Turn off oven, crack door, and leave cheesecake inside for 1 hour to cool gradually and prevent cracking.
07 -
Heat heavy cream in a small saucepan until hot but not boiling. Pour over dark chocolate chips in a heatproof bowl, wait 2 minutes, then stir until smooth and glossy.
08 -
Once cheesecake is fully cooled, spread ganache evenly over the top. Chill for at least 4 hours or overnight to set and meld flavors.