Preheat your oven to 325°F. Using two muffin pans, line 14-17 cups with paper liners. Set the pans aside.
Add the 20 Oreo cookies to a food processor and pulse them until they're a fine crumb. Add in the 2 tablespoons of granulated sugar and the melted butter. Mix until combined.
Scoop 1.5 tablespoons of crust mixture into each cup. Using the bottom of a small cup or something similar, press down the cookie crumbs to flatten it smooth. Bake for 8 minutes. Once baked, allow the crusts to cool completely.
Using a stand or hand mixer, beat the softened cream cheese for 2 minutes, until is it totally smooth. Add in the sour cream, granulated sugar, and vanilla extract, and mix until combined. Add in the eggs one at a time, and mix just until everything is combined. Fold in the crushed Oreo cookies.
Add equal amounts of cheesecake batter on top of the cooled crusts. Bake the cheesecakes for 20-22 minutes. Once baked, allow the cheesecakes to sit for about an hour at room temperature. Then, transfer them to an airtight container and chill them in the refrigerator for at least 3 hours.