Preheat your oven to 350°F (175°C) and grease a muffin tin or line with paper liners for easy removal.

Take 12 Oreo cookies and crush them into fine crumbs. You can use a food processor or place them in a zip-top bag and crush with a rolling pin.

Mix the Oreo crumbs with 3 tablespoons of melted butter. Press about a tablespoon of the mixture firmly into each muffin tin cup to form cookie cups.

Bake the cookie bases for 5-7 minutes until set and slightly crispy.

In a large bowl, beat the softened cream cheese, sugar, and vanilla extract until smooth. Then add the egg and mix until just combined.

Remove the cookie cups from the oven and let them cool for a few minutes. Once cooled, fill each Oreo cup with about 2 tablespoons of the cheesecake mixture.

Return the muffin tin to the oven and bake for an additional 10-12 minutes or until the filling is set.

Allow the cookie cups to cool completely before removing them from the tin. Top with whipped cream or chocolate drizzle if desired, and enjoy!