oreo cheesecake recipe

**For the Crust:** - 24 Oreo cookies, crushed into fine crumbs - 1/4 cup unsalted butter, melted **For the Cheesecake Filling:** - 3 packages (8 oz each) cream cheese, softened - 1 cup granulated sugar - 1 cup sour cream - 1 teaspoon vanilla extract - 3 large eggs - 15 Oreo cookies, coarsely chopped **For the Topping:** - 1 cup heavy cream - 2 tablespoons powdered sugar - 1/2 teaspoon vanilla extract - 6 Oreo cookies, coarsely chopped (for garnish)