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Gooey 5-Minute Gluten-Free Chocolate Mug Cake Recipe

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3.9 from 10 reviews

This Gooey 5-Minute Gluten-Free Chocolate Mug Cake is a quick and easy single-serving dessert perfect for satisfying your chocolate cravings without the wait. Made with gluten-free oat flour and rich Dutch-processed cocoa powder, this microwave mug cake delivers a moist, fudgy texture in just minutes. Ideal for gluten-sensitive dessert lovers, it’s ready in under 7 minutes from start to finish and can be customized with your favorite toppings like whipped cream or ice cream.

Ingredients

Wet Ingredients

  • 3 tablespoons milk (dairy or non-dairy)
  • 1 large egg yolk
  • 1½ tablespoons vegetable oil
  • ¼ teaspoon vanilla bean paste
  • 1 tablespoon hot water

Dry Ingredients

  • 3 tablespoons granulated sugar
  • 3 tablespoons unsweetened Dutch-processed cocoa powder
  • 2½ tablespoons gluten-free oat flour
  • ⅛ teaspoon baking powder
  • Pinch kosher salt

Mix-ins and Optional Toppings

  • 1-2 tablespoons bittersweet or semisweet chocolate (baking wafers, chopped baking bars, or chocolate chips)
  • Optional for serving: powdered sugar, whipped cream, and/or ice cream

Instructions

  1. Combine Wet Ingredients: In a 12-ounce or larger mug, whisk together the milk, egg yolk, vegetable oil, and vanilla bean paste until fully combined. For a cleaner look, you can whisk in a separate bowl and then transfer the batter to the mug.
  2. Add Dry Ingredients and Hot Water: Add the sugar, cocoa powder, gluten-free oat flour, baking powder, and kosher salt to the mug. Whisk everything until the batter is completely smooth. Then mix in the hot water to help create a gooey texture. If mixed separately, pour the batter into the mug at this stage.
  3. Incorporate Mix-ins: Fold in any desired mix-ins like sprinkles, nuts, or fruit so they are dispersed throughout the batter. For chunkier additions like chopped chocolate or dollops of peanut butter or Nutella, place them gently on top without mixing in.
  4. Microwave Cooking: Microwave the mug cake on high for 1 minute initially, then continue microwaving in 15-second increments until the cake is fully baked but still moist and gooey. The total cooking time usually ranges between 1 to 2 minutes; the example microwave takes about 1 minute 45 seconds.
  5. Cool and Serve: Let the mug cake cool for 2 to 3 minutes before enjoying. Serve with optional toppings such as whipped cream, ice cream, powdered sugar, fresh fruit, or nuts to enhance the flavor.

Notes

  • Use a microwave-safe mug that holds at least 12 ounces to prevent overflow during cooking.
  • For best results, use unsweetened Dutch-processed cocoa powder for a richer chocolate flavor.
  • You can substitute the milk with any dairy-free alternative to keep this recipe vegan-friendly (just note it is not fully vegan since it contains egg yolk).
  • Adjust cooking time based on your microwave’s wattage to avoid overcooking, which can make the cake dry.
  • Add-ins like chopped nuts or chocolate chips add texture but avoid mixing thick dollops into the batter as they may sink.
  • Cooling slightly allows the cake to set perfectly and prevents burns when eating.