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Fondant Baulois Recipe

4.4 from 74 reviews

Fondant Baulois is a rich and decadent French chocolate cake featuring a glossy, meringue-like crust and a perfectly tender, molten center. The cake combines dark chocolate and salted butter with caramel for a deep, complex flavor. Its preparation involves carefully folding airy eggs with chocolate and resting the batter before baking to achieve a delicate texture that is both fudgy and airy.

Ingredients

Scale

Chocolate Mixture

  • 200 g dark baking chocolate (50% to 60% cocoa)
  • 200 g high-quality salted butter
  • 1 generous tablespoon salted butter caramel (homemade or store-bought)

Egg Mixture

  • 5 medium eggs at room temperature
  • 200 g brown sugar (cassonade)

Dry Ingredients and Miscellaneous

  • 1 heaping tablespoon flour (about 20 g), sifted
  • Butter and sugar for greasing and lining the mold

Instructions

  1. Prepare the Chocolate: In a bowl, melt the broken chocolate pieces with the salted butter using a double boiler or microwave at low power. Stir until smooth and shiny. Then, incorporate the salted butter caramel and mix well. Allow the mixture to cool to lukewarm.
  2. Prepare the Eggs: In a large bowl or the bowl of a stand mixer, vigorously whisk the whole eggs with the brown sugar for about 5 minutes. The mixture should blanch, double in volume, and become very frothy—this is the key to achieving the meringue-like crust.
  3. Combine the Mixtures: Gently fold the cooled chocolate-butter-caramel mixture into the egg-sugar mixture using a spatula.
  4. Add the Flour: Sift the flour over the combined mixture and carefully fold it in with a spatula. Use a lifting motion to avoid deflating the eggs and maintain airiness.
  5. Rest the Batter: Butter a round 20-22 cm mold and line it with parchment paper. Pour the batter into the mold and let it rest at room temperature for 2 hours. This crucial step allows air bubbles to rise to the surface.
  6. Bake the Cake: Preheat the oven to 210°C with convection (fan) heat. Bake the cake for 5 minutes to set the crust. Without opening the oven door, reduce the temperature to 120°C and continue baking for 35 minutes.
  7. Cool the Cake: When removed from the oven, the center should still be slightly wobbly. Allow the cake to cool to room temperature.
  8. Refrigerate for Texture: Refrigerate the cake for at least 4 hours, ideally overnight. Remove from the refrigerator 30 minutes before serving to restore the full fondant texture.

Notes

  • Resting the batter before baking is essential to develop the meringue crust and the delicate texture inside.
  • Using good quality dark chocolate and salted butter enhances the flavor complexity.
  • Do not open the oven door during the initial bake time to maintain temperature stability.
  • The cake center remains slightly molten even after baking and cooling, providing its signature fondant texture.
  • Bringing the cake to room temperature before eating ensures optimal softness and melt-in-the-mouth experience.

Keywords: Fondant Baulois, French chocolate cake, molten chocolate cake, salted butter caramel dessert, meringue crust cake