Dark chocolate mousse cake on sablé base

Name: Dark chocolate mousse cake on sablé base
Prep time: 30 min
Cook time: 20 min
Total time: 50 min
Yield: 8
Ingredients: Salted butter 5.3 oz; Brown sugar ½ cup; Sugar 4 tbsp; Fine salt 0.8 tsp; Vanilla bean 1; Dark chocolate 5.3 oz; Type 00 flour 1 ½ cup; Unsweetened cocoa powder 6 tbsp; Baking soda 1 tsp; Dark chocolate 70% 10.6 oz; Fresh liquid cream semi-whipped 2 ½ cups; Chocolate sprinkles to taste; Unsweetened cocoa powder to taste

it de fr es br

Vegetarian

Difficulty: Average
Prep time: 30 min
Cook time: 20 min
Serving: 8
Cost: Average
Note 3 hours of rest

PRESENTATION

Recipe by
Frau Knam

Dark chocolate mousse cake on a sablé base—really, this is one showstopper. Imagine adding a touch of elegance to your dessert table with this. Seriously good. It’s got that crisp cocoa sablé base topped with fluffy, rich mousse. And honestly, it’s both tender and a bit fancy. For folks who really really love a dark chocolate mousse cake, the way the airy mousse sits on the French sablé base is just delightful. It's got that perfect balance of creamy and crunchy textures. And you know what? You get that authentic French patisserie vibe—just saying "sablé" and "mousse" feels so so sophisticated. Perfect for special occasions or when you want to impress your friends with something more fancy than just your usual chocolate cake. Sure, some might compare this to a rich chocolate cake, but the harmony between the light, airy mousse and that golden, crumbly sablé crust is what sets it apart. Thing is, the mousse is wonderfully not too sweet, so the deep cocoa flavor really shines through without overpowering everything else. And listen, the French flair is all about the textures—first, you get the gentle, almost melt-in-your-mouth mousse, then bam, that solid snap from the cookie base. This kind of chocolate mousse tart is all over bakeries celebrating refined European traditions, but it's also totally suitable for a casual family meal or an elegant dinner party. Pretty simple. I mean, it’s easy to see why this chocolate dessert recipe garners attention—it looks stunning, tastes incredible, and offers that mix of crisp and creamy only a genuine mousse cake with sablé can provide. Whether you’re a fan of classic desserts or just want to up your dessert game, this cake adds a little magic to any gathering. For real.

INGREDIENTS

Ingredients for the sable base: Salted butter 5.3 oz (150 g); Brown sugar ½ cup (120 g); Sugar 4 tbsp (50 g); Fine salt 0.8 tsp (5 g); Vanilla bean 1; Dark chocolate 5.3 oz (150 g); Type 00 flour 1 ½ cup (175 g); Unsweetened cocoa powder 6 tbsp (30 g); Baking soda 1 tsp (5 g)

for the mousse: Dark chocolate 70% 10.6 oz (300 g); Fresh liquid cream 2 ½ cups (600 g) - semi-whipped

for garnishing: Chocolate sprinkles to taste; Unsweetened cocoa powder to taste

Preparation

How to prepare Dark chocolate mousse cake on sablé base

To prepare the dark chocolate mousse cake on sable base, start with the base: in a bowl, pour the salted butter, brown sugar 1, granulated sugar 2, vanilla bean seeds, and salt 3.

Knead to form a dough 4 and then add the flour, unsweetened cocoa powder 5, and baking soda 6.

Add the chocolate flakes 7 and knead 8, gather the ingredients and transfer them to a work surface 9.

Form a dough, wrap it in plastic wrap 10, and place it in the fridge for 1 hour. Take the base and roll it out with a rolling pin to a thickness of about 1/8 inch 11, cut it with a 9-inch ring 12.

Transfer the disc to a baking tray lined with parchment paper 13, bake in a static oven preheated to 329°F for 20 minutes 14. Prepare the mousse: melt the dark chocolate in a double boiler 15.

When it has reached a temperature of 113°F 16, pour in the semi-whipped cream 17 all at once, mix first with the whisk and then with the spatula 18.

Place the ring back on the sable base, so that the cake maintains its shape, then pour the mousse 19, distribute it evenly 20, then level it with the spatula 21. Transfer to the fridge for two hours.

Retrieve the set cake, remove the ring and cover it laterally with chocolate flakes 22. Dust the surface with cocoa powder 23 and your dark chocolate mousse cake on sable base is ready to be enjoyed 34.