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Vegan Gluten Free Mug Cake Base Recipe

Vegan & Gluten Free Mug Cake Base Recipe

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An irresistibly fluffy oat flour mug cake base recipe that's eggless & vegan. Customize with your favorite flavorings & mix-ins!
Course Dessert, Snack
Cuisine American
Diet Gluten Free, Vegan, Vegetarian
Keyword easy mug cake, eggless, gluten free mug cake, healthy mug cake, healthy vegan mug cake, mug cake, mug cake no egg, mug cake recipe, no egg, oat flour, oat flour mug cake, vegan mug cake
Prep Time 5 mins
Cook Time 3 mins
Total Time 8 mins
Servings 1 mug cake
Calories 312


  • ¼ cup oat flour (or gluten free all-purpose flour)
  • ½ tsp baking powder
  • pinch of salt
  • 3 Tbsp fruit mash/puree (banana, applesauce, or pumpkin)
  • 1-2 Tbsp sweetener, to taste (maple syrup, honey, or granulated sugar)
  • 1 Tbsp nut butter
  • 1 Tbsp milk of choice

Optional Flavorings & Mix-Ins

  • tsp cinnamon
  • tsp vanilla extract
  • 2 tsp mix-ins (chocolate chips, nuts, sprinkles, etc.)
  • whatever you like!


  • In a bowl, whisk together dry ingredients (flour, baking powder, salt & seasonings).
  • Separately, mix wet ingredients (fruit mash/puree, sweetener, nut butter, milk, and optional vanilla).
  • Gently fold dry ingredients into wet mixture, until integrated. Stir in any desired mix-ins.
  • Spray inside of mug (14-16oz) with cooking spray. Add mug cake batter.
  • Microwave 2 minutes 45 seconds, or more/less depending on your microwave wattage. (I tested this recipe in my 900-watt microwave—see cook time guidance below and adjust for your microwave.) Test to see if a toothpick comes ou tclean.
  • Allow to cool 1 minute in mug. Place a plate on top of mug, then flip and tap mug with a spoon to remove mug cake. Rest 3-5 minutes before cutting and eating.
  • Best enjoyed immediately!

To make gluten free mug cake with an egg:

  • Replace 1 Tbsp nut butter + 1 Tbsp nondairy milk with 1 whisked egg.
  • When cooking, microwave for at least 15-20 seconds less as you test to find the right time in your machine.


Mug Cake Cook Time & Microwave Wattage

Check your microwave wattage and reference the times listed below—but these times are NOT exact! Start with at least 30 seconds less than the time listed, then continue to cook in short intervals, testing with a toothpick as you go. You will need to experiment to find the right cook time in your microwave.
  • 700-watts: 3 minutes 30 seconds
  • 800-watts: 3 minutes 5 seconds
  • 900-watts: 2 minutes 45 seconds
  • 1000-watts: 2 minutes 30 seconds
  • 1100-watts: 2 minutes 15 seconds
  • 1200-watts: 2 minutes 5 seconds
  • 1300-watts: 1 minute 55 seconds
*If you make this recipe with an egg, it will need to cook for at least 15-20 seconds less.

Nutrition Note:

Nutrition provided for a gluten free mug cake made with mashed banana, maple syrup, almond butter, almond milk, and no optional mix-ins.


Serving: 1mug cake | Calories: 312kcal | Carbohydrates: 49g | Protein: 8g | Fat: 10g | Sodium: 426mg | Fiber: 7g | Sugar: 20g