Step 1

Add the flour, sugar, baking powder, and sprinkles to a microwave safe mug (8oz. or larger). Stir until everything is well combined.

Step 2

Add the milk, melted butter, and vanilla extract to the mug. Stir until a soft batter forms, making sure to scrape all the flour out of the corners of the mug.

Step 3

Microwave the mug cake for about 60 seconds, or until it has puffed to about 2-3 times the volume. Cook time will vary with the wattage of your microwave (I used a 1000 watt microwave and 60-70 seconds was perfect).

Step 4

Allow the mug cake to cool for a few minutes and then top with your preferred frosting option, or enjoy unfrosted.