Decadent Keto Chocolate Mousse Tart Recipe: Creamy, Low-Carb & Sugar-Free Delight

Keto Chocolate Mousse Tart: A Decadent Low-Carb Dessert

Indulging in a rich, restaurant-quality dessert doesn’t have to derail your keto lifestyle. This elegant Keto Chocolate Mousse Tart balances luxurious flavor and silky texture with a crust that’s buttery, nut-packed, and totally low-carb. Perfect for dinner parties, date nights, or any time you want to treat yourself, it proves that keto desserts can be just as fancy as their sugar-filled counterparts.

Why You’ll Love This Fancy Keto Dessert

1. Ultra-Creamy Texture
   The whipped chocolate mousse filling is feather-light yet intensely chocolatey, thanks to high-quality cocoa and just the right amount of cream cheese.

2. Buttery Almond Crust
   A blend of almond flour, melted butter, and a hint of sweetener forms a golden, gluten-free shell that holds its shape beautifully.

3. Elegant Presentation
   Garnish with fresh berries, edible flowers, or a dusting of cocoa powder for Instagram-worthy plating.

4. Low-Carb & Sugar-Free
   At under 5 g net carbs per slice, this tart satisfies sweet cravings without spiking blood sugar.

Ingredients

Almond Flour Tart Crust

• 1 ¾ cups (200 g) almond flour

• 3 Tbsp (42 g) powdered erythritol (or your preferred keto sweetener)

• 1 Tbsp (8 g) unsweetened cocoa powder

• 4 Tbsp (56 g) unsalted butter, melted

• 1 large egg, room temperature

• ½ tsp vanilla extract

Chocolate Mousse Filling

• 6 oz (170 g) cream cheese, softened

• ½ cup (120 ml) heavy whipping cream

• 3 Tbsp (21 g) unsweetened cocoa powder

• ¼ cup (60 ml) powdered erythritol

• 1 tsp vanilla extract

• Pinch of sea salt

Optional Garnish

• Fresh raspberries or strawberries

• Thin dark-chocolate shavings (sugar-free)

• Edible flowers or mint leaves

• Dusting of cocoa powder

Step-by-Step Instructions

1. Prep & Preheat

Preheat your oven to 350 °F (175 °C). Grease a 9-inch (23 cm) tart pan with removable bottom.

2. Make the Crust

1. In a medium bowl, whisk together almond flour, erythritol, and cocoa powder until evenly combined.

2. Stir in the melted butter, egg, and vanilla extract. Mix with a spatula until a uniform dough forms.

3. Press the dough firmly into the bottom and up the sides of the prepared tart pan, creating an even layer.

3. Blind-Bake the Crust

1. Line the crust with parchment paper and weigh down with pie weights or dried beans.

2. Bake for 12 minutes, then remove weights and parchment and bake 5 minutes more until the edges set.

3. Let the crust cool completely on a wire rack.

4. Whip the Mousse Filling

1. In a clean mixing bowl, beat the softened cream cheese until smooth.

2. Add cocoa powder, erythritol, vanilla, and salt; mix until fully incorporated.

3. In a separate bowl, whip the heavy cream to stiff peaks.

4. Gently fold the whipped cream into the chocolate-cream-cheese mixture until no streaks remain.

5. Assemble & Chill

1. Spoon the chocolate mousse into the cooled crust, smoothing the top with an offset spatula.

2. Cover and refrigerate at least 4 hours (or overnight) to allow the tart to set fully.

6. Garnish & Serve

• Just before serving, garnish with fresh berries, a light dusting of cocoa powder, or delicate edible flowers.

• Use a hot, damp knife for clean slices: run the blade under hot water, wipe dry, and slice.

Pro Tips for Perfect Results

• Room-Temperature Ingredients: Ensure cream cheese and egg are at room temp to prevent lumps in the mousse.

• Sweetener Choice: Powdered erythritol gives the smoothest texture; if using granular erythritol, blend briefly in a spice grinder first.

• Crust Variations: Swap ¼ cup of almond flour for finely chopped pecans or hazelnuts for extra flavor.

• Make-Ahead Friendly: This tart holds up for 3–4 days refrigerated—perfect for weekend dinner parties or meal prepping elegant desserts.

Nutritional Info (Per Slice, 12 servings)

Calories 290

Fat 27g

Protein 6g

Total Carb 6g

Fiber 2g

Net Carb 4g

Why This Dessert Works on Keto

• High in Healthy Fats: Almond flour, butter, and heavy cream keep you satiated and support ketosis.

• Low Net Carbs: At just 4 g net carbs, it fits seamlessly into daily keto macros.

• Sugar-Free Satisfaction: Erythritol provides sweetness without blood-sugar spikes or aftertastes.

Ready to Impress?

Whether you’re hosting a special occasion or simply craving a restaurant-style treat at home, this Keto Chocolate Mousse Tart delivers on flavor and elegance—without the carbs. Give it a try tonight, and don’t forget to pin this recipe for later!

If you like this recipe, check out these other delicious dessert recipes:

Keto Lemon Bars

Keto Chocolate Chip Cheesecake Bars

Easy Keto Peanut Butter Cookies