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Chocolate lava mug cake in a white ceramic mug on marble with melted chocolate flowing

Chocolate Lava Mug Cake

A rich, fudgy single-serving microwave chocolate cake with a molten dark chocolate center that comes together in just five minutes.
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Prep Time 3 minutes
Cook Time 2 minutes
Total Time 5 minutes
Servings: 1 servings
Course: Dessert
Cuisine: American
Calories: 520
Ingredients Method Notes

Ingredients
  

  • 4 tbsp all-purpose flour
  • 4 tbsp granulated sugar
  • 2 tbsp unsweetened cocoa powder good quality
  • 1/4 tsp baking powder
  • 1 pinch salt
  • 3 tbsp whole milk
  • 2 tbsp vegetable oil or melted butter
  • 1/4 tsp vanilla extract
  • 1 large egg yolk
  • 1 oz dark chocolate roughly chopped, about 2 squares

Method
 

  1. In a large microwave-safe mug, whisk flour, sugar, cocoa powder, baking powder, and salt with a fork until fully combined with no clumps.
  2. Add milk, vegetable oil, vanilla extract, and egg yolk. Stir until batter is smooth and no flour streaks remain.
  3. Press chopped dark chocolate pieces into the center of the batter so they are buried about halfway down.
  4. Microwave on high for 60 to 75 seconds, checking at 60 seconds. Edges should look set but center should appear slightly glossy and underdone.
  5. Rest for 30 seconds before eating as the center will be very hot. Serve from the mug or tip onto a plate and top with ice cream.

Notes

Use a 12 oz or larger mug to prevent overflow. Check at 60 seconds and stop when edges look set but center is still glossy and slightly underdone. The lava only works if the chocolate pieces are buried inside the batter, not sitting on top. Use egg yolk only for the best fudgy texture.