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Microwave Blueberry Mug Cake Recipe

4.6 from 63 reviews

This Microwave Blueberry Mug Cake is a quick and easy single-serving dessert that combines simple pantry staples to create a moist, tender, and flavor-packed treat. Bursting with fresh or frozen blueberries, this cake is perfect for a fast indulgence made in under two minutes using your microwave.

Ingredients

Scale

Dry Ingredients

  • ¼ cup All-Purpose Flour
  • 2 tablespoons Granulated Sugar
  • ¼ teaspoon Baking Powder
  • ⅛ teaspoon Pinch of Salt

Wet Ingredients

  • 3 tablespoons Milk (whole or plant-based)
  • 1 tablespoon Vegetable Oil (or melted butter)
  • ¼ teaspoon Vanilla Extract

Fruits

  • 23 tablespoons Fresh or Frozen Blueberries

Instructions

  1. Choose Your Mug: Select a standard-sized, microwave-safe mug about 12-14 ounces. Prefer a wider, shallower mug as it promotes even cooking. Fill the mug only halfway with batter to avoid overflow when the cake rises.
  2. Combine Dry Ingredients: Add all-purpose flour, granulated sugar, baking powder, and salt directly into the mug. Thoroughly whisk or fork mix these ingredients to evenly distribute the baking powder for a uniform rise and to avoid any bitter taste.
  3. Add Wet Ingredients: Pour milk, vegetable oil, and vanilla extract into the mug over the dry mix. Whisk gently until just combined, leaving a few small lumps to prevent developing gluten which causes toughness. Aim for a batter consistency like thick pancake batter.
  4. Fold in the Blueberries: Carefully fold fresh or frozen blueberries into the batter with a spoon or spatula using a gentle sweeping motion from bottom to top, protecting the berries from breaking and avoiding over-mixing. Optionally toss berries in flour prior to folding if worried about sinking.
  5. Clean the Rim and Microwave: Wipe any drips from the mug rim to prevent burning and for neat presentation. Center the mug inside the microwave.
  6. Cook with Care: Microwave on high for 70 to 90 seconds depending on your microwave’s wattage (start at 70 seconds and add in 10-second increments if needed). The cake is ready when the top looks set, springy to the touch, and has slightly pulled away from the sides.
  7. Rest and Cool: Remove the mug carefully as it will be hot. Let it rest on the counter for 1-2 minutes to allow residual heat to finish cooking and the cake to set properly, ensuring an optimal texture.

Notes

  • Use a microwave-safe mug to avoid cracking or damage.
  • Adjust cooking time depending on the power of your microwave; high wattage models cook faster.
  • Do not over-mix the batter to prevent a dense or rubbery texture.
  • Fresh or frozen blueberries both work well; if using frozen, no need to thaw.
  • For a richer flavor, substitute vegetable oil with melted butter.
  • To prevent blueberries from sinking, toss them lightly in extra flour before folding in.

Keywords: Microwave blueberry mug cake, quick dessert, single serving cake, blueberry mug cake recipe, easy mug cake