In a mixing bowl, combine the crushed chocolate graham crackers and melted butter. Press the mixture into the bottom of a springform pan to form the crust.
In another bowl, beat the softened cream cheese until smooth. Gradually add the granulated sugar and cocoa powder, mixing until well combined.
Add the eggs one at a time, mixing well after each addition. Stir in the sour cream and melted dark chocolate until smooth.
Pour the filling over the crust in the springform pan. Drop spoonfuls of raspberry jam on top and swirl with a knife.
Bake in the preheated oven for 60 minutes or until the center is set. Allow to cool before removing from the pan.
Notes
For a more intense chocolate flavor, use high-quality dark chocolate.
Keyword cheesecake, chocolate dessert, Dark Chocolate Raspberry Cheesecake, raspberry dessert