Chop up the Oreos until they are in fine pieces using a food processor to ensure they are finely diced.
Add the Oreo crumbs to a microwave-safe mug of your choice.
Slowly pour in the milk and stir until the milk is combined with the Oreos.
Microwave on high for 90 seconds.
Serve topped with your favorite toppings, such as cool whip or whipped cream, and enjoy directly from the mug!