01 -
Preheat oven to 325°F (160°C). Grease and line a springform pan.
02 -
Mix graham cracker crumbs and melted butter, then press into the pan to form the crust.
03 -
Beat mascarpone cheese and sugar until smooth. Add eggs one at a time, then mix in orange juice, zest, sour cream, and vanilla.
04 -
Pour the mixture into the crust and bake for 50-60 minutes, until set but slightly jiggly in the center. Let cool and refrigerate for at least 4 hours.
05 -
Heat heavy cream in a small pot until simmering, then pour it over the chocolate chips. Stir until smooth.
06 -
Pour the ganache over the chilled cheesecake, spreading evenly. Let set before serving.