If you’re looking for a showstopping dessert that blends layers of rich chocolate, tangy raspberries, and melt-in-your-mouth mousse, this Chocolate Raspberry Mousse Cake is your next baking adventure. Each forkful is an irresistible combination: a moist chocolate cake base topped with creamy raspberry mousse, crowned by a cloud of chocolate mousse, with fresh berries and chocolate shavings to finish. It sounds fancy, but the ingredients are comfortingly familiar, and the process is absolutely doable. Trust me, this is the cake friends and family will rave about for years!

Ingredients You’ll Need
The beauty of this Chocolate Raspberry Mousse Cake is how every ingredient serves a purpose—each one creating that perfect harmony of flavors, colors, and textures. Gather these simple yet essential ingredients, and get ready to transform them into an unforgettable dessert.
- All-purpose flour: Forms the sturdy yet tender base layer for your cake.
- Granulated sugar: Adds sweetness to both the cake and the mousse layers, ensuring every bite is just right.
- Unsweetened cocoa powder: Infuses the cake with deep chocolate flavor—don’t skimp on quality here!
- Baking powder and baking soda: Work together to make your cake rise into a light, fluffy foundation.
- Salt: Just a pinch balances flavors and enhances the richness of the chocolate.
- Buttermilk: Gives the cake extra moisture and a subtle tang.
- Vegetable oil: Keeps the cake soft and tender, even after chilling.
- Egg: Binds everything together for that perfect cake texture.
- Hot water: Helps bloom the cocoa powder, intensifying that chocolaty taste.
- Vanilla extract: Adds warmth and depth to both cake and mousse components.
- Fresh or frozen raspberries: The soul of the raspberry mousse—vivid, tart, and fruity.
- Sugar (for mousse): Sweetens the raspberries and rounds out their flavor.
- Lemon juice: A hint pops the raspberry flavor and keeps it from tasting flat.
- Water (for gelatin): Essential for blooming the gelatin and setting the mousse.
- Powdered gelatin: Key to that lovely, sliceable mousse texture.
- Heavy cream (for both mousses): Brings lushness and stability, making each mousse irresistibly creamy.
- Semi-sweet chocolate chips: Melts into a perfectly rich chocolate mousse—pick your favorite brand for best results.
- Fresh raspberries, chocolate shavings, whipped cream: Optional but irresistible for garnishing and that final, fancy touch.
How to Make Chocolate Raspberry Mousse Cake
Step 1: Bake the Chocolate Cake Base
Start by prepping your oven to 350°F (175°C) and lining the bottom of a 9-inch springform pan. In a big mixing bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt. Add in the buttermilk, oil, egg, vanilla, and hot water—don’t worry if the batter looks loose, that’s what makes the cake so tender. Pour it into the prepared pan and bake for 20 to 25 minutes, until a toothpick comes out clean. Let the cake cool completely before moving on. This step sets the rich, chocolatey foundation for your Chocolate Raspberry Mousse Cake.
Step 2: Prepare the Raspberry Mousse
In a saucepan, combine those gorgeous raspberries, sugar, and lemon juice over medium heat. Stir until the berries break down into a juicy sauce—this usually takes about 5–7 minutes. Strain the mixture to remove seeds (unless you love a bit of texture), and set the puree aside. Meanwhile, sprinkle the gelatin over water and let it bloom for about 5 minutes, making sure it looks like a thick gel. Gently warm the raspberry puree, then stir in the bloomed gelatin until completely dissolved. Allow the mixture to cool to room temperature. In a separate bowl, whip the heavy cream to stiff peaks, then fold it gently into the raspberry puree. Spread this mousse evenly over your cooled cake layer, smoothing the top. Chill for at least 1 hour to let the mousse set beautifully.
Step 3: Make the Chocolate Mousse Layer
For the silky crown of your Chocolate Raspberry Mousse Cake, begin by heating 1/2 cup of heavy cream just until steaming—don’t let it boil. Pour it over the chocolate chips and let them sit for a minute before stirring until smooth and glossy. Cool this chocolate mixture slightly. Then, in another bowl, whip the remaining 3/4 cup heavy cream with vanilla until stiff peaks form. Fold the whipped cream into the melted chocolate gently, ensuring a light, fluffy mousse. Spread this chocolate mousse over the set raspberry layer, smoothing it neatly. Chill the entire cake for at least 2 to 3 hours, or even overnight, until firm and sliceable.
Step 4: Garnish and Serve
Once the cake is fully chilled and set, gently release it from the springform pan. Just before serving, top with fresh raspberries, a scattering of chocolate shavings, and maybe a swirl of whipped cream for that bakery-style flourish. Each slice is a visual delight and a taste to remember!
How to Serve Chocolate Raspberry Mousse Cake

Garnishes
Take your Chocolate Raspberry Mousse Cake from impressive to unforgettable with a few thoughtful garnishes. Pile on a handful of fresh raspberries, add a blanket of delicate chocolate shavings, or pipe little clouds of whipped cream around the edge. These extras not only look beautiful but echo the flavors inside, giving each piece even more wow factor.
Side Dishes
While this cake truly shines on its own, you can pair it with sides for a full dessert spread. Try serving alongside a scoop of vanilla bean ice cream, a small dish of lightly sweetened whipped cream, or a handful of fresh berries for an extra fruity finish. After a big meal, strong brewed coffee or a glass of dessert wine makes a lovely complement to the richness of the cake.
Creative Ways to Present
Want to make your Chocolate Raspberry Mousse Cake the centerpiece? For special occasions, decorate with gold leaf or edible flowers. Try slicing the cake into neat rectangles for an elegant plated dessert, or use mini springform pans to create individual servings—guests will love getting their very own cake!
Make Ahead and Storage
Storing Leftovers
Leftover Chocolate Raspberry Mousse Cake keeps remarkably well. Cover the cake tightly and refrigerate for up to three days. The layers may settle and develop even more flavor as they chill, making those second-day slices extra special.
Freezing
If you’d like to freeze the cake, chill it first until firm, then wrap slices individually in plastic wrap and foil. Freeze for up to one month. When you’re ready to enjoy, let slices thaw in the refrigerator overnight. While the mousse’s texture softens a bit, the flavor still packs a punch.
Reheating
Mousse cakes like this are best served cold or at room temperature, so there’s no need to reheat. Simply remove from the fridge 15–20 minutes before serving to let the flavors shine. If you’ve frozen a slice, give it ample time to thaw gently in the fridge.
FAQs
Can I use frozen raspberries instead of fresh?
Absolutely! Just make sure to thaw and drain frozen raspberries first. They bring the same vibrant flavor and color to your raspberry mousse.
How do I keep the mousse layers from mixing together?
The key is patience: let each mousse layer chill until set before adding the next. This helps achieve those clean, professional-looking layers in your Chocolate Raspberry Mousse Cake.
Can I make the entire cake a day ahead?
Yes, and in fact, I recommend it! Allowing the cake to chill overnight ensures each mousse layer is firm, and the flavors meld beautifully for a perfect slice every time.
How do I get perfect, neat slices?
Use a sharp knife dipped in hot water and wiped dry between each cut. This helps create smooth slices without dragging the mousse layers.
What can I use if I don’t have a springform pan?
If you don’t have a springform pan, you can use a regular cake pan lined well with parchment, leaving plenty of overhang so you can lift out the cake after chilling. Just take extra care when unmolding—it’s a bit trickier but still doable!
Final Thoughts
If you’re ready to treat yourself and your loved ones, you simply have to try this Chocolate Raspberry Mousse Cake. There’s something magical about the way chocolate and raspberry come together in airy mousse and tender cake, making every bite pure joy. I can’t wait for you to share this stunning dessert—and see it disappear slice by slice!
Print
Chocolate Raspberry Mousse Cake Recipe
- Total Time: 4 hours
- Yield: 10 servings 1x
- Diet: Non-Vegetarian
Description
Indulge in the luscious layers of this Chocolate Raspberry Mousse Cake. A decadent treat perfect for any special occasion or to satisfy your sweet tooth cravings.
Ingredients
For the chocolate cake base:
- 1/2 cup all-purpose flour
- 1/2 cup granulated sugar
- 1/4 cup unsweetened cocoa powder
- 1/2 teaspoon baking powder
- 1/4 teaspoon baking soda
- 1/4 teaspoon salt
- 1/4 cup buttermilk
- 1/4 cup vegetable oil
- 1 egg
- 1/4 cup hot water
- 1/2 teaspoon vanilla extract
For the raspberry mousse:
- 2 cups fresh or frozen raspberries
- 1/4 cup sugar
- 1 tablespoon lemon juice
- 1 tablespoon water
- 2 teaspoons powdered gelatin
- 1 cup heavy cream
For the chocolate mousse:
- 1 1/4 cups heavy cream
- 1 cup semi-sweet chocolate chips
- 1 teaspoon vanilla extract
For garnish (optional):
- Fresh raspberries
- Chocolate shavings
- Whipped cream
Instructions
- Preheat the oven: Preheat the oven to 350°F (175°C) and prepare a 9-inch springform pan.
- Make the chocolate cake base: Mix dry ingredients, add wet ingredients, pour into pan, and bake for 20-25 minutes.
- Prepare the raspberry mousse: Cook raspberries, sugar, and lemon juice, add gelatin, fold in whipped cream, and spread over cake.
- Create the chocolate mousse: Melt chocolate with cream, fold in whipped cream, layer over raspberry mousse, and chill.
- Garnish and serve: Add fresh raspberries, chocolate shavings, or whipped cream before serving.
Notes
- Make the cake a day ahead for best results.
- Store leftovers in the fridge for up to 3 days.
- If using frozen raspberries, thaw and drain before use.
- Prep Time: 45 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking, Chilling
- Cuisine: American, French-Inspired
Nutrition
- Serving Size: 1 slice
- Calories: 410
- Sugar: 28g
- Sodium: 95mg
- Fat: 27g
- Saturated Fat: 15g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 39g
- Fiber: 3g
- Protein: 5g
- Cholesterol: 85mg