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birthday cake in a mug fraiche living
5 from 1 vote

Birthday Mug Cake

This Birthday Mug Cake is such a fun and easy dessert! It is light, fluffy, vanilla mug cake that's bursting with colourful sprinkles and comes together in the microwave. It's the perfect way to celebrate a birthday or truly ANY special occasion!!

Course Dessert
Keyword Birthday Cake, Cake, Dessert, mug cake
Prep Time 5 minutes
Cook Time 2 minutes
Total Time 5 minutes
Servings 1 mug


  • 1/4 cup + 2 tablespoons all-purpose flour
  • 2 tablespoons sugar
  • 1/4 teaspoon baking powder
  • 1/4 cup milk (room temperature)
  • 2 tablespoons melted salted butter
  • 1/2 teaspoon vanilla
  • 1 teaspoon rainbow sprinkles (plus extra for decorating)
  • whipped cream (optional)


  1. In a small bowl, whisk together flour, sugar, and baking powder until combined. Whisk in the milk, butter, and vanilla extract and stir until the batter is smooth. Fold in 1 teaspoon of the sprinkles. Pour the batter into a 14 oz (or larger) microwave-safe mug with straight or high sides. Top with remaining sprinkles if desired!

  2. Microwave on high for 1 ½ - 2 minutes (give or take 30 seconds depending on the strength of your microwave, ours took 2 minutes), or until the cake is done to your liking. Allow the cake to cool for a couple of minutes before serving, the mug will be hot!