Vegan Blueberry Lemon Mug Cake

ByHannah Peterson

Fluffy, tender, and bursting with juicy blueberries and bright lemon zest — this Vegan Blueberry Lemon Mug Cake is the ultimate single-serve treat!

Ready in under 5 minutes (microwave) or 15 minutes (oven), it’s perfect for when you need a quick dessert, breakfast, or afternoon pick-me-up. No eggs, no dairy, and no fancy equipment required!

Why You’ll Love This Vegan Mug Cake

  • Single-serve = zero leftovers and minimal cleanup
  • Bright, fresh lemon-blueberry flavor
  • Soft, cake-like texture with juicy berry pockets
  • Naturally vegan and easily gluten-free
  • Customizable with what you have on hand

Vegan Blueberry Lemon Mug Cake Recipe

(Makes 1 large mug cake)

Ingredients:

  • 4 tbsp (30g) all-purpose flour (or gluten-free 1:1 blend)
  • 2 tbsp coconut sugar or granulated sugar
  • ¼ tsp baking powder
  • Pinch of salt
  • 3 tbsp unsweetened plant milk (oat, almond, or soy)
  • 1 tbsp neutral oil or unsweetened applesauce (for oil-free)
  • ½ tsp vanilla extract
  • 1 tsp fresh lemon zest
  • 1 tsp fresh lemon juice (optional, for extra brightness)
  • ¼ cup (about 35g) fresh or frozen blueberries
  • Optional topping: extra lemon zest, a sprinkle of sugar, or a drizzle of maple syrup

Instructions:

  1. Mix the batter: In a large microwave-safe mug (at least 12–14 oz capacity), whisk together the flour, sugar, baking powder, and salt.
  2. Add wet ingredients: Stir in plant milk, oil (or applesauce), vanilla, lemon zest, and lemon juice until just combined and smooth. Do not overmix.
  3. Add blueberries: Gently fold in most of the blueberries, then scatter a few on top for that beautiful finish.
  4. Cook your way:
    • Microwave: Cook on high for 1 minute 30 seconds to 2 minutes 30 seconds (time varies by microwave — start checking at 1:30). It should be set and spring back when gently pressed.
    • Oven: Preheat to 350°F (175°C). Bake in the mug for 12–18 minutes until a toothpick comes out clean or with a few moist crumbs.
  5. Serve: Let cool for 1–2 minutes (it will be hot!). Enjoy straight from the mug with a spoon — or top with extra lemon zest and a drizzle of maple syrup.

Storage: Best eaten fresh and warm, but leftovers can be stored in the fridge for 1 day and gently reheated.

Pro Tips for the Perfect Mug Cake

  • Extra fluffy: Don’t overmix the batter — a few lumps are fine.
  • Gluten-free: Use a good 1:1 gluten-free flour blend.
  • Oil-free: Applesauce works beautifully and keeps it extra moist.
  • Berry variations: Swap blueberries for raspberries, chopped strawberries, or chocolate chips.
  • Sweeter version: Add 1 extra tsp sugar or a few drops of liquid stevia.
  • Make it a meal: Stir in a scoop of protein powder or top with vegan yogurt for a more filling breakfast.

This Vegan Blueberry Lemon Mug Cake is pure comfort in a mug — bright, sweet, and satisfying. Your photo beautifully shows both the easy batter stage and that gorgeous baked result with the perfect blueberry-studded crumb!

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