Gluten-Free Chocolate Mug Cake
Desserts

Gluten-Free Chocolate Mug Cake

ML
By Marie Lefebvre · Updated September 19, 2026

A rich, fudgy chocolate mug cake ready in under 5 minutes — no wheat flour, no baking powder required. Perfect for a spontaneous dessert craving with pantry staples you already have. One mug, one microwave, pure chocolatey happiness.

Prep⏱️ 5 min
Servings👥 1 servings
Difficulty📊 Very Easy
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🛒 Ingredients

1 servings

1
  • 4 tbsp granulated sugar
  • 2 tbsp unsweetened cocoa powder
  • 2 tbsp cornstarch or rice starch
  • 2 tbsp neutral oil (sunflower or vegetable)
  • 2 tbsp milk
  • 1 whole egg

Directions

  1. 1

    In a large microwave-safe mug, combine the sugar, cocoa powder and cornstarch. Whisk with a fork until evenly blended with no lumps.

  2. 2

    Crack in the egg and stir vigorously for about 30 seconds until fully incorporated.

  3. 3

    Add the milk and oil, mixing until the batter is perfectly smooth and glossy.

  4. 4

    Microwave on full power for 2 minutes 30 seconds to 3 minutes — the top should look just set but still slightly moist.

  5. 5

    Let the mug cake rest for 1 minute before eating; the center will stay gooey and fudgy, which is exactly the goal!

💡 Chef's Tip

Press a few dark chocolate chips or a small square of chocolate into the center of the batter before microwaving for a molten-lava effect. Finish with a spoonful of whipped cream or a dusting of powdered sugar for a polished look.