# How to Make It:
01 - Place Oreo cookies in a microwave-safe mug and crush thoroughly with a fork until finely crumbled.
02 - Add milk to the crumbled Oreos and stir until the mixture forms a thick, soaked paste.
03 - Incorporate flour, sugar if using, and baking powder. Mix until fully combined.
04 - Add the egg and vanilla extract if desired, stirring until the batter is smooth and uniform.
05 - Microwave on high power for 1 minute 30 seconds. Check the cake; it should be set but moist. If needed, heat an additional 10 to 20 seconds.
06 - Allow the cake to cool for 1 to 2 minutes before enjoying directly from the mug.