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Microwave Coffee Cake in a Mug

This Coffee Cake In A Cup recipe is the perfect quick fix for a sweet craving. If other microwave mug cakes have left you disappointed, this one is worth trying. It mixes up in moments and bakes in about a minute, producing a light, fluffy cake topped with a buttery streusel.

A spoonful of Coffee Cake made in a mug with streusel topping

Coffee Mug Cake

I generally avoid baking with a microwave, but this mug coffee cake changed my mind. Many mug cake recipes promise quick decadence and deliver dry or rubbery results. This version manages to be moist and tender while staying fast and simple.

Red mug and spoon with microwave coffee cake in it.

I first shared this recipe several years ago and recently remade it to refresh the photos and notes. The method is straightforward and forgiving: soften butter, combine a few pantry staples, add a touch of applesauce for moisture, and top with a small brown sugar–cinnamon streusel. The result is a single-serving treat you can enjoy warm from the mug.

Does Coffee Cake In a Cup Have Coffee In It?

Despite the name, traditional coffee cake usually doesn’t contain coffee. The term refers to a cake commonly served alongside coffee, not a cake flavored with coffee. This mug version follows that tradition: it’s a cinnamon-sugar coffee cake meant to be enjoyed with a cup of coffee if you like.

Up close of coffee cake in a mug and a spoon inside.

Tips for Making Coffee Cake In A Cup

  • Use a mug that’s tall enough to allow the cake to rise about an inch above the batter. This helps avoid spillover in the microwave.
  • Microwave power varies widely, so start at 50 seconds and increase in 10-second increments until the center is set. A toothpick inserted into the center should come out with a few moist crumbs, not wet batter.
  • For the best texture and flavor, eat the mug cake warm, straight from the microwave. As it cools completely it can lose some of the soft, tender quality that makes it special.
  • If you prefer a slightly lighter topping, reduce the brown sugar in the streusel by a teaspoon. For extra indulgence, add a small dollop of cream cheese glaze once the cake has cooled for a minute or two.
  • To adapt the recipe, try swapping applesauce for mashed banana or pumpkin puree for a seasonal twist. Keep in mind moisture substitutions may alter cook time slightly.

Related Mug Cake Ideas

  • Pumpkin Coffee Cake in a Mug (seasonal variation)
  • Hot Fudge Mug Cake (rich, chocolate version)

📖 Recipe

Coffee Cake In A Mug-- the perfect remedy for a sugar craving when you don't want to spend a lot of time or heat up the oven.

{2 minute} Coffee Cake in a Cup

A single-serving coffee cake made in the microwave—quick, tender, and topped with a buttery cinnamon streusel.

Prep Time: 3 minutes | Cook Time: 1 minute | Total Time: 4 minutes | Servings: 1

Ingredients

  • 1 tablespoon butter (softened)
  • 2 tablespoons sugar
  • 2 tablespoons applesauce
  • Few drops vanilla extract
  • ¼ cup all-purpose flour
  • ⅛ teaspoon baking powder
  • Pinch of salt
  • For the streusel: 1 tablespoon butter, 2 tablespoons flour, 1 tablespoon brown sugar, ¼ teaspoon cinnamon

Instructions

  1. In a microwave-safe mug, soften 1 tablespoon butter in the microwave for about 5 seconds—soft, not fully melted. Stir in 2 tablespoons sugar until combined.
  2. Mix in the applesauce and a few drops of vanilla. Add the flour, baking powder, and a pinch of salt; stir until just combined. Smooth the batter in the bottom of the mug with the back of a spoon.
  3. To make the streusel, combine 1 tablespoon butter, 2 tablespoons flour, 1 tablespoon brown sugar, and ¼ teaspoon cinnamon in a small bowl. Use your fingers to work the butter into the dry ingredients until the mixture resembles coarse crumbs. Sprinkle the streusel evenly over the batter.
  4. Microwave on high for 50–80 seconds depending on your microwave. At 60 seconds my microwave yields a perfectly set top. Start at 50 seconds and add 10-second increments until a toothpick inserted in the center comes out with only a few moist crumbs.
  5. Serve warm from the mug. The cake is best enjoyed hot or slightly cooled; once completely cooled it will firm up and lose a bit of the fresh texture.

Nutrition Facts (approx.)

Serving: 1 | Calories: 521 kcal | Carbohydrates: 75 g | Protein: 5 g | Fat: 23 g | Saturated Fat: 14 g | Cholesterol: 60 mg | Sodium: 205 mg | Fiber: 1 g | Sugar: 38 g

Note: Nutrition values are estimates and will vary based on exact ingredients and portion sizes.

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