Add 3 ½ tablespoons all purpose flour, 1 ½ tablespoons cane sugar¼ teaspoon baking powder¼ teaspoon baking powder, and 1/8 teaspoon sea salt to a wide, 8 ounce shallow microwavable mug, bowl or ramekin. Whisk to combine.
Create a small well in the middle of the dry ingredients. Add 2 tablespoons plus 1 teaspoon milk, 2 ½ teaspoons vegetable oil, and ¾ teaspoon vanilla extract to the mug. Mix fully to form a cake batter. Be sure to scrape the bottom of the mug to make sure all flour is incorporated in the batter.
Fold in sprinkles, raspberries, or chocolate chips, as desired.
"Bake" the cake! The amount of time you need to cook for is going to vary depending on the strength of your microwave. I have provided estimates based on different microwaves I have tested. If your cake is sticky to the touch after microwaving, continue microwaving in 10 second bursts until no longer sticky. 800 Watt Microwave: Microwave for 2 minutes.950 Watt Microwave: Microwave for 1 minute and 15 seconds. 1000 Watt Microwave: Microwave for 1 minute.1200 Watt Microwave: Microwave for 50 seconds.1800 Watt Microwave: Microwave for 40 seconds. Let rest for 30 seconds, then enjoy!
Notes
Your mug needs to be a minimum of 8 ounce capacity and ideally 4.5-5 inches wide at the mouth. Wide and shallow vessels are best. I love using these Old Havana mugs for mug cake recipes. These ramekins or these wide mouth mugs or even small bowls would also work great.
Pay attention to the wattage of your microwave. I have given cook time estimates based on different microwaves I have tested this recipe in. Please note that the combination between different strength microwaves and different sized mugs can effect the results of your cake.
Raspberry Vanilla Mug Cake: Use just 2 tablespoons milk, omit the sprinkles and press 3 fresh raspberries into the mug cake.
Mug Cake with Chocolate Chips: Swap the sprinkles for 1.5 teaspoons mini chocolate chips.