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–+ servings
Dark Chocolate Mousse Cake

Irresistibly Rich Dark Chocolate Mousse Cake Recipe

This Dark Chocolate Mousse Cake is a luxurious dessert featuring a moist chocolate base and airy mousse, perfect for satisfying your chocolate cravings.
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Prep Time 25 minutes
Cook Time 30 minutes
Chilling Time 8 hours
Total Time 8 hours 55 minutes
Servings: 10 slices
Course: Desserts
Cuisine: American
Calories: 400
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Cake Base
  • 1 cup All-Purpose Flour Provides structure; opt for high-quality flour for the best results.
  • 3/4 cup Dutch Cocoa Powder Deep chocolate flavor; Dutch-processed cocoa is recommended.
  • 1 teaspoon Fine Espresso Powder Enhances chocolate taste; use sparingly for optimal flavor.
  • 1 teaspoon Baking Powder Ensures leavening; make sure it’s fresh for a good rise.
  • 1/2 teaspoon Baking Soda Works with acidic components; helps create a light texture.
  • 1/4 teaspoon Fine Sea Salt Balances sweetness; a crucial element for flavor enhancement.
  • 1 cup Granulated White Sugar Adds sweetness; adjust according to your personal preference.
  • 1/2 cup Neutral Oil Keeps the cake moist and tender; melted coconut oil is a good substitute.
  • 1 cup Full-Fat Sour Cream Provides moisture and richness; Greek yogurt works as a substitute.
  • 1 large Whole Large Egg Adds richness; use flaxseed meal for an eggless version.
  • 1 teaspoon Pure Vanilla Extract Enhances flavor; fresh vanilla gives the best taste.
  • 1 cup Boiling Water Activates cocoa and adds moisture; essential for a rich cake.
For the Chocolate Mousse
  • 1 cup Heavy Cream Adds lightness and volume; chill before whipping for better results.
  • 1 large Whole Large Egg Provides stability; can be replaced with a plant-based option for an eggless mousse.
  • 1 large Large Yolk Provides stability; can be replaced with a plant-based option for an eggless mousse.
  • 1/2 cup Granulated Sugar Sweetens the mousse; adjust for your chocolate preference.
  • 1/4 cup Dutch Cocoa Powder Deepens flavor; refer to the previous note.
  • 1/4 teaspoon Fine Sea Salt Essential for balance; enhances overall depth of flavor.
  • 8 ounces Dark Chocolate The mousse’s foundation; choose high-quality chocolate for the best taste.
For the Chocolate Ganache
  • 8 ounces Dark Chocolate Main flavor source; chop finely for easy melting.
  • 1 cup Heavy Cream Creates a smooth texture; use fresh cream for optimal results.

Equipment

  • 9-inch springform pan
  • mixing bowls
  • Whisk
  • electric mixer
  • Saucepan
  • spatula

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 350ºF (180ºC) and prepare a 9-inch springform pan by lining the bottom with parchment paper.
  2. In a large mixing bowl, whisk together all-purpose flour, Dutch cocoa powder, optional espresso powder, baking powder, baking soda, and fine sea salt.
  3. In a separate bowl, blend granulated sugar, neutral oil, full-fat sour cream, whole egg, and vanilla extract using an electric mixer for 2-3 minutes.
  4. Sift the dry ingredients into the wet mixture and fold together. Stir in boiling water gradually to maintain a smooth consistency.
  5. Pour the batter into the prepared springform pan and bake for 24-28 minutes. Allow to cool completely in the pan.
  6. In a saucepan, whisk together heavy cream, whole egg, egg yolk, granulated sugar, cocoa powder, optional espresso powder, and fine sea salt, warming it over low heat.
  7. Remove from heat and stir in finely chopped dark chocolate and pure vanilla extract until smooth. Allow to cool before chilling for 30 minutes.
  8. Whip another batch of cold heavy cream until firm peaks form, then gently fold it into the cooled chocolate mixture.
  9. Spread the mousse evenly over the cooled chocolate cake in the springform pan. Chill in the refrigerator for at least 8 hours.
  10. To prepare the ganache, heat heavy cream until simmering, pour it over finely chopped dark chocolate, stir until smooth, and drizzle over the chilled cake.

Nutrition

Serving: 1sliceCalories: 400kcalCarbohydrates: 40gProtein: 6gFat: 25gSaturated Fat: 15gPolyunsaturated Fat: 2gMonounsaturated Fat: 8gCholesterol: 85mgSodium: 200mgPotassium: 300mgFiber: 3gSugar: 25gVitamin A: 500IUCalcium: 60mgIron: 3mg

Notes

For a firmer mousse, consider adding a little gelatin to the mousse mixture. This works especially well for eggless versions.

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