Mini Chocolate Volcano Cake with Hazelnut Sauce

1 cake (4 slices)mediumPortuguese
Mini Chocolate Volcano Cake with Hazelnut Sauce

A molten-centered chocolate cake made with buckwheat and coconut flour, topped with a flowing raw cacao-coconut ganache. The deliberately underbaked center creates a warm, lava-like sauce that pools when poured over the finished cake. Naturally sweetened with maple syrup and coconut sugar.

Ingredients

Yield: 1 cake (4 slices)
  • ½ cup buckwheat flour
    all-purpose flour1:1gluten-free becomes adds:wheat

    source uses buckwheat for gluten-free

    Full guide →
  • 2 tbsp coconut flour
  • ¼ cup raw cacao powder
  • 3 tbsp maple syrup
  • 1 cup hazelnut milk
    almond milk1:1dairy-freedairy-free

    source says 'or another you prefer'

  • 2 tbsp coconut sugar
    maple syrup1:1vegan

    substitution maintains sweetness

    Full guide →
  • 1 tsp vanilla powder
  • 1 tsp baking soda
  • 1 tsp coconut oil, for greasing the mold
  • ¼ cup raw cacao powder, for ganache
  • ½ cup hazelnut milk, at room temperature, plus more as needed
    almond milk1:1dairy-freedairy-free

    source says 'or another you prefer'

  • 3 tbsp coconut oil, melted
  • 3 tbsp coconut sugar, for ganache
    maple syrup1:1vegan

    substitution maintains sweetness

    Full guide →
  • 2 tbsp maple syrup, for ganache
  • ½ tsp vanilla powder, for ganache

Instructions

  1. 1

    Preheat oven to 350°F. Grease a small round mold (about 4 ¾" diameter) with coconut oil and set aside.

  2. 2

    In a food processor or bowl, combine all dry ingredients and mix well. Add the remaining cake ingredients and process until uniform.

  3. 3

    Transfer batter to the prepared mold. Bake for 20-25 minutes at the same temperature. At 15-20 minutes, perform a toothpick test: the toothpick should come out almost clean at the edges but still wet in the center.

  4. 4

    Remove from oven (the center will appear undercooked, which is intentional) and cool completely.

  5. 5

    While cooling, combine all ganache ingredients in the food processor or blender and process until you reach a sauce consistency like the photo. If too thick, add more hazelnut milk and process again until correct texture.

  6. 6

    Turn out the cake onto a plate or platter. Using a fork, pierce the center deeply in several spots. Pour the ganache over the cake starting from the center, allowing it to flow down the sides. Serve with extra sauce on the side if desired.

Tips

Tip 1

The underbaked center is intentional and creates the molten lava effect when the ganache is poured.

Tip 2

Pierce the cake thoroughly before pouring the ganache to allow it to flow into the center and create the volcano effect.

Good to Know

Storage

Cover and refrigerate up to 2 days. Reheat gently before serving to restore molten center.

Make Ahead

Bake cake up to 1 day ahead. Make ganache up to 4 hours ahead. Assemble and pour ganache immediately before serving.

Serve With

Serve warm with extra ganache on the side. Can be plated individually or served from a platter.

See pairing guide →

Common Mistakes

Watch

Fully baking the center to avoid losing the molten texture that defines the dish.

Watch

Skipping the fork piercing before pouring ganache to avoid ganache pooling on top rather than flowing through.

Watch

Using cold ganache to avoid it setting too quickly on the warm cake.

Substitutions

Dairy-Free Swaps

hazelnut milk
almond milk1:1dairy-freedairy-free

source says 'or another you prefer'

Full guide →
hazelnut milk
cashew milk1:1dairy-free

source says 'or another you prefer'

Vegan Options

coconut sugar
maple syrup1:1vegan

substitution maintains sweetness

Full guide →

Gluten-Free Swaps

buckwheat flour
all-purpose flour1:1gluten-free becomes adds:wheat

source uses buckwheat for gluten-free

Full guide →
Find more substitutions →