Three-Layer Oreo Cheesecake

1 . Stage

Preheat the oven to 325 degrees F (165 degrees C).

2 . Stage

Place 30 whole cookies in a food processor; process until finely ground. Crush 16 cookies into a bowl. Reserve any remaining cookies for another use.

3 . Stage

Stir ground cookies and melted butter together until well combined. Press into a 10-inch springform pan.

4 . Stage

Beat cream cheese, sugar, and vanilla in a large bowl with an electric mixer until well blended. Mix in sour cream. Add eggs, one at a time, mixing after each until just blended. Remove 1/2 of the batter to another bowl and stir in 16 crushed cookies until well combined. Pour cookie batter onto the crust.

5 . Stage

Divide remaining batter into 2 parts. Stir melted chocolate into one part; pour on top of the cookie batter. Top with remaining plain batter.

6 . Stage

Bake in the preheated oven until the surface of the cheesecake is firm except for a small spot in the center that will jiggle when the pan is gently shaken, about 45 minutes. Run the tip of a table knife around the edges of the pan, set the pan on a wire rack, and allow the cheesecake to cool at room temperature, about 1 hour. Refrigerate until completely chilled, 4 hours to overnight.