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Vegan Lemon Mug Cake

A simple vegan lemon mug cake made in the microwave in less than 5 minutes. All you need is a handful of pantry ingredients, plus fresh lemon juice and zest. It's perfect for an easy single-serve dessert. Serve it with a scoop of your favorite plant-based ice cream or other toppings of choice.
Course Dessert
Cuisine vegan
Prep Time 4 minutes
Cook Time 1 minute
Total Time 5 minutes
Servings 1

Ingredients

  • 1/4 cup (30g) all-purpose white flour, spoon and leveled
  • 2 tablespoons (30g) granulated sugar
  • 1/2 teaspoon baking soda
  • 1/8 teaspoon fine grain sea salt
  • 3 tablespoons oat milk, plain and unsweetened
  • 1 tablespoon avocado oil (or other light-tasting oil)
  • 1 teaspoon vanilla extract
  • 1-2 teaspoons lemon zest
  • 1/2 tablespoon lemon juice

Instructions

  • Add the flour, sugar, baking powder and salt to a medium mug. Stir to combine.
  • Add the oat milk, oil, lemon zest, lemon juice and vanilla to the dry mixture. Stir using a spoon or small whisk until combined. Make sure not to overmix, but mix until smooth.
  • Microwave for 60-90 seconds. The timing will depend on your microwave. Keep an eye on the cake and if it overflows (this shouldn't be an issue), heat it in small intervals.
  • Serve with a scoop of your favorite vegan ice cream if desired.

Notes

For a gluten-free option, use Bob’s Red Mill 1:1 gluten-free flour.
I haven’t tested this cake with other flours, so I can’t guarantee it will work with other options. If you try a different flour, let me know how it turns out in the comments!
Use any plant-based milk you have on hand, ideally plain and unsweetened to avoid changing the flavor of the cake. I tested this recipe with both soy milk and oat milk.
For a stronger lemon flavor, use 2 packed teaspoons of lemon zest. For a lighter lemon flavor, start with 1 packed teaspoon. 
Optional add-ins: You can add a tablespoon of white chocolate or a sprinkle of poppy seeds to the cake before "baking".