Step 1: Preparing the Crust / Preheat the oven to 325°F (163°C). In a bowl, mix graham cracker crumbs, sugar, and melted butter. Press into the bottom of a 9-inch springform pan. Bake for 10 minutes and let it cool.
Step 2: Making the Cheesecake Filling/ Beat cream cheese and sugar until smooth. Add eggs one at a time, mixing well. Stir in vanilla and sour cream. Pour over the cooled crust.
Step 3: Preparing the Chocolate Ganache / Place chopped Godiva chocolate in a heatproof bowl. Heat cream in a saucepan until simmering, then pour it over the chocolate. Let it sit for 1-2 minutes, then stir until smooth.
Step 4: Assembling the Cheesecake/ Pour the cheesecake filling over the crust. Drizzle the ganache on top and swirl with a knife.
Step 5: Baking the Cheesecake/ Bake at 325°F (163°C) for 55-65 minutes. The edges should set, and the center should be slightly jiggly. Turn off the oven and cool the cheesecake for 1 hour. Then refrigerate for at least 4-6 hours or overnight.