Preheat Oven & Prepare Pan:

• Preheat the oven to 325°F (165°C).
• Grease a 9-inch springform pan and line the bottom with parchment paper for easy removal.

Make the Oreo Crust:

• In a food processor, crush the Oreo cookies until they form fine crumbs.
• Combine the cookie crumbs with the melted butter and stir until well combined.
• Press the mixture firmly into the bottom of the prepared springform pan to form an even crust.
• Bake for 10 minutes and then set aside to cool while you prepare the filling.

Make the Red Velvet Cheesecake Filling:

• In a large bowl, beat the softened cream cheese and granulated sugar until smooth and creamy.
• Add the eggs one at a time, beating well after each addition.
• Stir in sour cream, vanilla extract, red food coloring, cocoa powder, flour, and salt. Mix until fully combined.
• Set aside about 1 cup of the batter in a separate bowl (for the swirl).

Assemble the Cheesecake:

• Pour the majority of the cheesecake batter into the cooled Oreo crust, smoothing it into an even layer.
• Drop spoonfuls of the reserved red velvet batter on top of the cheesecake.
• Use a knife or skewer to gently swirl the red velvet batter into the cream cheese filling to create a marbled effect.

Bake the Cheesecake:

• Place the springform pan on a baking sheet and bake for 55-65 minutes, or until the center is mostly set but slightly jiggly.
• Turn off the oven, crack the oven door, and let the cheesecake cool for about 1 hour.
• After 1 hour, remove the cheesecake from the oven and allow it to cool completely at room temperature.

Chill the Cheesecake:

• Once cooled, refrigerate the cheesecake for at least 4 hours or overnight to fully set.

Garnish and Serve:

• Before serving, top the cheesecake with crushed Oreos and a dusting of cocoa powder for an added touch of flavor and texture.
• Carefully remove the cheesecake from the springform pan and slice it into servings.