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Gluten-Free Mug Cake in White Mug. Topped with Whipped Cream and Sprinkles

Gluten-Free Vanilla Mug Cake

This gluten-free mug cake is soft, tender, and delicious. Add sprinkles to turn the simple vanilla cake into a funfetti dream. 

Prep Time 2 minutes
Cook Time 1 minute
Total Time 3 minutes
Servings 1 serving


  • 1/4 cup all-purpose gluten-free flour
  • 1/2 teaspoon baking powder
  • 2 tablespoons granulated sugar
  • 1 large egg
  • 2 tablespoons vegetable oil or melted butter
  • 1 tablespoon milk
  • 1/4 teaspoon vanilla extract
  • sprinkles, optional


  • 2 tablespoons softened butter or dairy-free spread
  • 3 tablespoons powdered sugar
  • 1 teaspoon milk, traditional or dairy-free


For the Microwave

  1. Spray a large (12 ounces) mug with nonstick cooking spray. Stir together gluten-free flour, sugar, and baking powder in the mug. Add egg, oil, milk, and vanilla extract. Stir until smooth with a fork or mini whisk. Stir in sprinkles if using. 

  2. Microwave on high for 60-80 seconds or until cake pulls away from the sides of the mug and the top looks dry. Allow cake to cool in the mug. Top warm cake with vanilla ice cream or whipped cream, if desired. Or allow the cake to cool and frost. 

For the Oven

  1. Preheat oven to 350 degrees. Follow step one above. Be sure to use an oven-safe mug. Place mug on a baking sheet.  Bake until set, about 20 minutes. 

For the Frosting

  1. Beat together the butter and powdered sugar until smooth with a spoon. Add milk. Mix until creamy. Spread frosting on cooled cake. If you put the frosting on the hot cake, it will melt.