Preheat oven to 350 degrees F & line 12 slots of a muffin tray
Separate the cookie outside and cream center of the oreos into two different bowls. In a ziploc bag or using a food processor, crush the cookie pieces until no large chunks remain.
Mix together crust ingredients. Push down 1 1/2 tbsp in the bottom of each cup. Bake for 6 minutes. Let cool for ~ 5 minutes.
Cream together the cream centers of the oreos, greek yogurt and cream cheese until smooth. Then mix in egg, sugar, vanilla extract, peppermint extract and green food coloring (optional).
Add ~ 2 tbsp cream cheese mixture over the crust. Bake for 18-20 minutes.
Let cool completely (about 30 minutes), then refrigerate for 4 hours, or overnight.
Top with melted chocolate and mint oreo pieces. Enjoy!