Chocolate Fondant (Fondant au Chocolat)

Quick Summary: Chocolate fondant (fondant au chocolat) is a rich, almost flourless French cake with a melt-in-your-mouth center and a thin meringue-like crust. This authentic Fondant Baulois style rests, bakes low and slow, then chills before serving.

What is chocolate fondant?

Chocolate fondant is a French chocolate cake prized for its soft, melting interior. Unlike the individual British molten "lava" fondant baked to order, this authentic version is a whole cake in the Fondant Baulois tradition: it rests, bakes gently, and chills so the crumb turns dense, creamy, and intensely chocolatey throughout.

And if you have ever heard about heavenly cakes, this is your dessert dream come true... the dessert created in the seaside resort of La Baule, France, in 1980.

Fondant au chocolat vs moelleux au chocolat

There is always confusion between fondant au chocolat and moelleux au chocolat. While they may look similar, one big secret sets them apart. So, what is it?

When it comes to texture, the fondant's center can range from barely moist to super moist, depending on the baking time. It is almost flour-free and has a wet, creamy center from intermediate cooking.

Moelleux au Chocolat is a denser cake with a firm exterior. It is less rich in eggs and chocolate and contains more flour than the chocolate fondant cake. 

But don't confuse both with le mi-cuit and le coeur coulant, which have a running center (cœur moelleux in French) and are served in individual portions.

Why you'll love this recipe

• Foolproof and quick. This fondant au chocolat comes together fast, and even a beginner with zero experience will nail it.
• An irresistible texture. A soft, melting center under a delicate, meringue-like crust makes every bite feel indulgent.
• A copycat of the famous Fondant Baulois. With its note of salted butter caramel, it closely mimics the legendary cake whose recipe the Boullier family keeps secret.
• Just a handful of ingredients. Chocolate, butter, eggs, sugar, and a little flour are all you need for a bakery-worthy dessert.
• Perfect for entertaining. Elegant enough for guests, yet easy enough to make on a whim, and you can prepare it ahead.

Ingredients

For ingredients and detailed instructions, refer to the recipe card below.

• Chocolate is the main ingredient in the recipe. Choose high-quality 70% dark chocolate (or chocolat noir) by Lindt or another trusted brand. Experiment by combining dark and milk chocolate in a 1:1 ratio if desired.

• Butter: The recipe calls for salted butter (butter with Guérande sea salt is best), but you can substitute semi-salted butter. To substitute, use unsalted butter with an added couple of pinches of salt or fleur de sel.

• Sugar: Use light brown sugar, or replace it with dark brown sugar or muscovado sugar, to intensify the cake's caramel flavor and moisture. Read more about ingredients that keep a cake moist.

• Eggs: Use large eggs at room temperature.

• Salted butter caramel, store-bought or homemade, is a signature of Fondant Baulois. I used this salted caramel topping.

• Flour: The recipe calls for a small amount of all-purpose flour. For a gluten-free version, replace it with potato starch.

How to make fondant au chocolat

The key to the success of fondant au chocolat is using top-quality chocolate and respecting the resting and chilling time.

So plan this cake in advance: the batter will need to rest for 2 hours at room temperature before baking and at least 4 hours, better overnight, after baking.

Step 1: Prepare an 8-inch (20 cm) springform pan or a cake ring wrapped in aluminum foil to form the bottom.

Step 2: Using softened butter, grease the bottom and sides of the pan or ring and line it with parchment paper. Place the prepared cake ring on a baking sheet.

Step 3: To make the cake batter, chop the chocolate and cut the butter into small cubes or pieces (photo 1).

Step 4: Melt chocolate and butter in a double boiler or bain-marie, stirring occasionally with a wooden spoon (photo 2). Let the mixture cool for 5 minutes.

Pro tip: Alternatively, use the microwave with 30-second increments or the stovetop with low heat.

Step 5: Place the salted butter caramel in a microwave-safe bowl and microwave until warm, then add it to the melted chocolate mixture.

Step 6: Place sugar and eggs in a large mixing bowl and whisk with an electric mixer for 5 minutes. The mixture will double in volume and look foamy (photo 3).

Step 7: Pour the cooled, melted chocolate and butter mixture into the eggs and sugar preparation and whisk on low speed. Add the sifted flour and gently mix with a rubber spatula (photo 4).

Step 8: Pour the batter into the prepared mold and let it rest for 2 hours at room temperature; no need to cover the mold (photo 5).

Step 9: Heat the oven to 410°F (210°). Bring the mold to the middle rack of the preheated oven and bake for 5 minutes. Then lower the oven temperature to 250°F (120°C) and bake for another 40 minutes.

Pro tip: Watch out for creating meringue crust and a slightly wobbly center on top of the cake.

Step 10: Remove the cake from the oven and let it cool to room temperature (photo 6). Then refrigerate it for at least 4 hours, better overnight.

Step 11: The next day, unmold the cake and let it stay at room temperature for 2-3 hours before serving to regain its melting texture.

Pro tip: To unmold the cake from the cake ring, pass a thin knife between the parchment paper and the ring to loosen the cake from the edges.

Expert Tips

1. Opt for a mold with a removable bottom, or use a cake ring wrapped in aluminum foil. Using a regular cake tin makes it challenging to remove the cake.
2. For the best results, use an 8-inch (20 cm) pan. The baking time is calculated to achieve the cake's desired texture. Use this simple cake pan calculator to recalculate ingredients for another cake pan size. However, you will need to experiment with the baking time to get the desired texture.
3. Don't overbake the cake. The cake is ready when the thin crust forms on top, and the center is slightly wobbly.
4. Respect the resting and chilling time for an authentic fondant au chocolat experience.
5. For slicing, use a long, sharp knife dipped in hot water, then dry it between slices.

How to serve fondant au chocolat

Enjoy this super-rich chocolate cake on multiple occasions and throughout the day, accompanied by crème anglaise (vanilla custard), a scoop of ice cream, sugar-free whipped cream, crème Chantilly, orange salad, or fresh red fruit.

Storing & freezing

You can store commercially made Fondant Baulois® for up to 3 weeks at room temperature, but I wouldn't recommend keeping the homemade version this way.

Store homemade fondant au chocolat in an airtight container in the refrigerator for up to 48 hours. You can also freeze it for up to 1 month and thaw it in the fridge overnight or at room temperature for a few hours.

Recipe FAQ

What does fondant au chocolat mean in English?
Fondant au chocolat translates as "chocolate fondant" and means "chocolate cake that melts in the mouth." In French, "fondant" means "melting," and "au chocolat" means "chocolate."

What is the difference between fondant and coulant (or lava cake)?
A fondant has a moist, dense, melting center throughout the cake, while a coulant, mi-cuit, or lava cake has a liquid, runny center and is usually baked to order in individual portions. This authentic French fondant is a whole cake, not an individual molten dessert.

Can I make chocolate fondant ahead of time?
Yes, and it is meant to be made ahead. The batter rests 2 hours before baking, and the baked cake chills at least 4 hours or overnight. Let it come back to room temperature for 2 to 3 hours before serving so it regains its melting texture. It keeps up to 48 hours refrigerated or up to 1 month frozen.

How do you pronounce fondant au chocolat?
You should pronounce it as "FON-dun oh sho-ko-lah," without the "ent" at the end of "fondant" and without the "t" at the end of "chocolat."

Who invented fondant au chocolat?
Fondant au chocolat was invented in the 1980s by the French chef Michel Bras, who perfected the recipe over two years.

How many calories are in fondant au chocolat?
One serving of fondant au chocolat contains about 367 calories, with 25.2 g total carbs, 24.2 g net carbs, 33.5 g fat, and 5.5 g protein.

Love French chocolate desserts? Try these next!

• French Chocolate Crepes
• French Chocolate Cake
• Royal Chocolate Cake
• French Chocolate Fondant Cake
• French Chocolate Raspberry Tart

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The nutritional information has been calculated using an online recipe nutrition calculator such as Verywellfit.com and is intended for informational purposes only. These figures should be used as a general guideline and not be construed as a guarantee.