Instructions

Step 1: Preheat your oven to 325°F (163°C) and grease a 9-inch springform pan to prepare for the crust.

Step 2: Mix the crushed chocolate cookies with the melted unsalted butter. Press this mixture firmly into the bottom of the springform pan. Bake for 10 minutes, then remove and let it cool.

Step 3: In a large bowl, beat the softened cream cheese until smooth and creamy. Add the granulated sugar, vanilla powder, eggs one at a time, beating well after each addition. Stir in the sour cream until the batter is smooth.

Step 4: Divide the batter evenly into two bowls. Stir the melted bittersweet chocolate into one bowl. Pour the chocolate batter over the cooled crust in the pan, then carefully spoon the vanilla batter on top to create two distinct layers.

Step 5: Place the springform pan on a baking sheet to catch any drips. Bake for 50 to 60 minutes, until the edges are set and the center slightly jiggles when gently shaken.

Step 6: Turn off the oven and leave the cheesecake inside with the door slightly open for about an hour. Afterward, refrigerate the cheesecake for at least 6 hours or preferably overnight to fully set.

Step 7: To make the ganache, heat the heavy cream until it just simmers. Pour the hot cream over the semi-sweet chocolate chips in a bowl. Let sit for a minute, then stir until smooth and glossy.

Step 8: Pour the ganache evenly over the chilled cheesecake, smoothing the top. Return to the refrigerator to chill briefly before serving.

Tips & Variations

For a richer crust, try adding a tablespoon of cocoa powder to the cookie mixture.

Vanilla powder can be substituted with 1 ½ teaspoons of pure vanilla extract if preferred.

Use a water bath during baking to prevent cracking and achieve a creamier texture.

Try topping the cheesecake with fresh berries for a bright contrast to the chocolate ganache.

Storage

Store the cheesecake covered in the refrigerator for up to 4 days. Keep it in the springform pan or transfer to an airtight container. To serve, let it sit at room temperature for 15 minutes for a silky texture. You can also freeze the cheesecake for up to a month; thaw overnight in the fridge before serving.

FAQs

Can I use regular vanilla extract instead of vanilla powder?

Yes, you can substitute 1 ½ teaspoons of vanilla extract for the vanilla powder. Add it with the other wet ingredients for best incorporation.

Why does the cheesecake need to cool in the oven with the door ajar?

Cooling the cheesecake gradually in the oven prevents sudden temperature changes, which reduces the chance of cracks forming on the surface while it sets.