Step 1: Prepare the Crust - Crush the Oreo cookies into fine crumbs and mix with melted butter. Press into the bottom of a 9-inch springform pan.
Step 2: Make the Cheesecake Filling - Beat cream cheese until smooth, add powdered sugar, melted chocolate, and vanilla. Mix well. Whip heavy cream until stiff peaks form and fold into the chocolate mixture.
Step 3: Assemble the Cheesecake - Pour the chocolate filling over the crust and smooth the top.
Step 4: Chill - Cover and refrigerate for at least 4 hours or overnight.
Step 5: Serve and Enjoy! - Remove from the springform pan, garnish if desired, slice, and serve cold.
Notes
Make sure your cream cheese is at room temperature for easier mixing. Use high-quality chocolate for the best flavor.