Preheat oven to 350 degrees F. In a food processor, combine the chocolate cookies, melted butter, and sugar. Process for a few minutes until the mixture turns into a crumb-like consistency.
Line a REGULAR muffin pan with paper liners or silicone wrappers and evenly divide the cookie mixture among 12 cups. With a spice jar, firmly press onto the cookie mixture to form a crust and set aside.
In a large mixing bowl beat together the cream cheese, sugar, and cocoa powder with an electric mixer until smooth. Add in the egg and vanilla extract and beat again until combined, be sure to scrape the sides of the bowl with a spatula.
Slowly add in the melted chocolate with a spatula until combined but don't over-mix. The batter will be thick and thats ok. Be sure to use a small spoon to make even out the batter in the cups.
Spoon the cheesecake mixture evenly on top of the chocolate cookie crust. Bake for 15-17 minutes or until the middles are set. Let the cheesecakes cool completely for at least 30 minutes, then transfer them to chill in the refrigerator until ready to serve.
Top cheesecakes with melted chocolate, crushed Oreo crumbs, and fresh fruit (optional), enjoy!