Making Oreo Cheesecake Cookie Cups is simple and enjoyable. Just follow these easy steps:

1. Preheat Oven: Begin by preheating your oven to 350°F (175°C).
2. Prepare Cookie Crust: In a food processor, crush the 24 Oreo cookies until they reach a fine crumb consistency. Add the melted butter and blend until combined.
3. Form Cookie Cups: Spoon the Oreo mixture into a greased muffin tin, pressing down firmly into the bottom and up the sides to form cups.
4. Bake Crusts: Place the muffin tin in the preheated oven and bake for about 10-12 minutes, or until set. Remove from the oven and let cool slightly.
5. Make Cheesecake Filling: In a mixing bowl, beat together the cream cheese and granulated sugar until smooth and creamy. Add the vanilla extract, egg, and sour cream, beating until fully combined.
6. Fill Cookie Cups: Spoon the cheesecake mixture into each of the cooled Oreo cookie cups, filling them to the top.
7. Bake Cheesecake Cups: Return the muffin tin to the oven and bake for an additional 12-15 minutes until the filling is just set but slightly jiggles in the center.
8. Cool: Remove from the oven and let cool at room temperature. Then transfer to the refrigerator and chill for at least 2 hours.
9. Serve: Once chilled, top each cheesecake cup with a dollop of whipped cream and sprinkle with crushed Oreo cookies.

These steps will guide you to creating the perfect Oreo Cheesecake Cookie Cups that will impress everyone!