Step 1: Prepare the Pan
Lightly grease a 9-inch springform pan with butter.
Optional: Line the bottom with parchment paper for easier removal.
Step 2: Make the Cookie Crust
Blend the Oreos or chocolate cookies with melted butter in a food processor until fine crumbs form.
Press the mixture firmly into the bottom of the prepared pan using the back of a spoon or measuring cup.
Refrigerate while preparing the filling.
Step 3: Make the Chocolate Ganache
Combine the dark chocolate and 3/4 cup heavy cream in a heatproof bowl.
Add instant coffee if using.
Place the bowl over a saucepan with simmering water, ensuring the bowl does not touch the water.
Stir until melted and smooth.
Remove from heat and let cool for 5 minutes.
Step 4: Prepare the Cheesecake Filling
In a large bowl, beat the cream cheese, sugar, and salt for 2–3 minutes until smooth and creamy.
Scrape down the bowl halfway through mixing.
Step 5: Combine the Chocolate
Pour the cooled ganache into the cream cheese mixture.
Mix on low-medium speed until fully combined.
Step 6: Whip the Cream
In a separate bowl, whip the remaining 3/4 cup chilled heavy cream until stiff peaks form.
Do not overwhip.
Step 7: Fold the Filling
Gently fold the whipped cream into the chocolate cheesecake mixture using a spatula.
Mix until smooth, fluffy, and fully incorporated.
Step 8: Chill the Cheesecake
Pour the filling over the chilled crust and spread evenly.
Refrigerate overnight or for at least 6 hours until fully set.
Step 9: Remove from Pan
Carefully remove the cheesecake from the springform pan and transfer to a serving plate.
Step 10: Prepare Optional Toppings
Ganache
Melt the cream and chocolate together over a double boiler until smooth.
Chocolate Whipped Cream
Whip together the heavy cream, sugar, and cocoa powder until stiff peaks form.
Step 11: Decorate
Let the ganache cool slightly until warm but pourable.
Spread over the chilled cheesecake.
Refrigerate for 10 minutes.
Pipe or spoon the chocolate whipped cream on top.
Step 12: Serve
Slice and enjoy this rich, creamy chocolate cheesecake chilled.