Heavenly Raspberry Chocolate Mousse Cake Recipe
If you’re searching for a show-stopping dessert that’s as decadent as it is beautiful, look no further than this Heavenly Raspberry Chocolate Mousse Cake. This layered masterpiece combines moist chocolate cake, a vibrant raspberry layer, and a cloud-like chocolate mousse, creating a symphony of flavors and textures in every bite. Whether you’re celebrating a special occasion or simply want to treat yourself and loved ones, this cake brings a slice of luxury to your table and is sure to win rave reviews from chocolate and fruit lovers alike.

Ingredients You’ll Need
With just a handful of straightforward ingredients, you’ll be amazed at how each component transforms into something extraordinary. Every element plays a crucial role: the rich cocoa, tart raspberries, and velvety cream all work in harmony to create the unforgettable Heavenly Raspberry Chocolate Mousse Cake.
- All-purpose flour: The foundation for a tender, sturdy cake base that holds up beautifully under all those luscious layers.
- Unsweetened cocoa powder: Deep, chocolatey flavor that gives the cake its signature richness and color.
- Baking soda: Ensures the cake rises perfectly, keeping it light and airy.
- Salt: A pinch brings out the chocolate’s complexity and balances the sweetness.
- Granulated sugar: Adds sweetness to both the cake and raspberry layer for balanced flavor.
- Brown sugar: Lends a hint of molasses depth and extra moisture to the cake.
- Buttermilk: Creates a tender crumb and subtle tang, enhancing the overall flavor.
- Vegetable oil: Keeps the cake moist for days, even after chilling.
- Large eggs: Bind everything together and enrich the cake’s texture.
- Vanilla extract: Rounds out the flavors with a warm, aromatic note.
- Hot coffee or hot water: Intensifies the chocolate flavor and ensures a smooth, pourable batter.
- Fresh or frozen raspberries: Bursting with tart, juicy flavor for a vivid fruit layer.
- Lemon juice: Brightens and sharpens the raspberry layer, making it pop.
- Cornstarch: Thickens the raspberry mixture, giving it a luxurious, jammy consistency.
- Semi-sweet chocolate: The star of the mousse, providing rich, velvety chocolate notes.
- Butter: Adds silkiness and depth to the mousse’s texture.
- Strong brewed coffee (optional): Enhances the chocolate’s complexity without overpowering.
- Heavy cream (cold): Whipped to soft peaks, it creates the dreamy mousse layer.
- Powdered sugar: Sweetens and stabilizes the mousse for a flawless finish.
How to Make Heavenly Raspberry Chocolate Mousse Cake
Step 1: Prepare the Chocolate Cake Base
Begin by preheating your oven to 350°F (175°C) and greasing a 9-inch springform pan. In a large bowl, whisk together the flour, cocoa powder, baking soda, salt, and both sugars until well combined. Add the buttermilk, vegetable oil, eggs, and vanilla extract, mixing until the batter is smooth and glossy. Finally, stir in the hot coffee or water to bring everything together. Pour this luscious batter into your prepared pan and bake for 22 to 25 minutes, or until a toothpick inserted comes out clean. Let the cake cool completely in the pan to ensure it stays moist and ready for layering.
Step 2: Make the Raspberry Layer
While the cake base cools, move on to the vibrant raspberry layer. In a small saucepan, combine the raspberries, granulated sugar, lemon juice, and water. Bring the mixture to a gentle simmer over medium heat, stirring occasionally. In a separate bowl, whisk the cornstarch with a tablespoon of water until smooth, then stir it into the raspberry mixture. Cook for another two to three minutes, just until the sauce thickens and the raspberries break down. Remove from heat and allow it to cool completely before spreading it over the cooled cake base. Refrigerate while you prepare the mousse—this helps set the layer for clean, beautiful slices!
Step 3: Whip Up the Chocolate Mousse
Now comes the pièce de résistance of the Heavenly Raspberry Chocolate Mousse Cake: the mousse itself. Melt the chopped semi-sweet chocolate with butter (and coffee, if using) in a heatproof bowl set over simmering water or in the microwave, stirring until silky smooth. Let the chocolate cool just slightly so it won’t melt the whipped cream. In a large bowl, beat the cold heavy cream with powdered sugar and vanilla until soft peaks form. Fold the whipped cream into the cooled chocolate mixture in batches, being gentle to keep the mousse airy and light. The result is a fluffy, dreamy mousse that’s impossible to resist.
Step 4: Assemble and Chill
Once all your layers are ready, it’s time to build your masterpiece. Spread the raspberry mixture evenly over the cooled cake base, then gently spoon the chocolate mousse on top. Use a spatula to smooth the mousse layer, giving the cake a polished, bakery-worthy look. Refrigerate the entire cake for at least four hours, but overnight is even better. This chilling time is essential for the mousse to set and the flavors to meld, ensuring each slice is picture-perfect and irresistibly delicious.
Step 5: Garnish and Serve
Before serving, unleash your inner pastry chef and garnish the Heavenly Raspberry Chocolate Mousse Cake with fresh raspberries, chocolate curls, or a dusting of cocoa powder. These finishing touches make the cake as stunning visually as it is delightful to eat. Now, slice and savor every bite of your homemade showstopper!
How to Serve Heavenly Raspberry Chocolate Mousse Cake

Garnishes
Elevate your cake with simple yet elegant garnishes. Fresh raspberries add a pop of color and a burst of tartness, while chocolate curls or shavings create a luxurious, professional finish. A light dusting of cocoa powder or powdered sugar can make each slice look extra inviting. Don’t be afraid to get creative—edible flowers or a drizzle of raspberry coulis can also add a special touch.
Side Dishes
This cake is the star of the show, but if you want to round out your dessert table, serve it alongside a scoop of vanilla bean ice cream or a dollop of freshly whipped cream. For a refreshing contrast, consider pairing it with a light fruit salad or a glass of chilled dessert wine. Each side enhances the rich, layered flavors of the Heavenly Raspberry Chocolate Mousse Cake.
Creative Ways to Present
If you’re entertaining or celebrating, try slicing the cake into slender wedges and serving on decorative plates with a swirl of raspberry sauce. For a modern twist, cut the cake into small squares for an elegant dessert platter, or use mini springform pans to create individual portions. However you present it, this cake is bound to impress.
Make Ahead and Storage
Storing Leftovers
Store any leftover Heavenly Raspberry Chocolate Mousse Cake in the refrigerator, covered with plastic wrap or in an airtight container. The cake will stay fresh and delicious for up to four days, and the mousse remains beautifully creamy throughout. Make sure to keep it chilled until ready to serve for the best texture and flavor.
Freezing
If you want to make the cake ahead or save slices for later, you can freeze it with fantastic results. Slice the cake, wrap each piece tightly in plastic wrap and then foil, and store in a freezer-safe container. The Heavenly Raspberry Chocolate Mousse Cake will keep for up to two months. Thaw overnight in the refrigerator before serving.
Reheating
This cake is meant to be served chilled, so there’s no need to reheat it. However, if you prefer a softer mousse or want to take the chill off, let the cake sit at room temperature for 15 to 20 minutes before serving. This brings out the chocolate and raspberry flavors beautifully.
FAQs
Can I use frozen raspberries instead of fresh?
Absolutely! Both fresh and frozen raspberries work perfectly for the raspberry layer. If you use frozen, there’s no need to thaw first—just simmer them straight from the freezer.
What can I substitute for buttermilk in the cake?
If you don’t have buttermilk on hand, simply mix 1/2 cup of milk with 1/2 tablespoon of lemon juice or vinegar and let it sit for five minutes. This quick fix works beautifully in the Heavenly Raspberry Chocolate Mousse Cake.
Can I make this cake gluten-free?
Yes, a 1:1 gluten-free flour blend can be substituted for the all-purpose flour. The result is just as moist and delicious, making this cake accessible for gluten-sensitive guests.
How far in advance can I make this cake?
The Heavenly Raspberry Chocolate Mousse Cake is perfect for advance prep. You can make it a day before serving, which actually improves the mousse’s texture and allows the flavors to meld. Just keep it refrigerated until ready to serve.
Do I need a springform pan?
A springform pan is highly recommended for easy removal and neat layers, but you can use a regular cake pan lined with parchment if needed. Just be sure to let the cake set thoroughly and lift it out carefully.
Final Thoughts
There’s nothing quite like sharing a homemade Heavenly Raspberry Chocolate Mousse Cake with people you love. The combination of rich chocolate, bright raspberries, and airy mousse is pure magic, and every step is worth the indulgent results. I hope you give this recipe a try—it just might become your new favorite celebration treat!
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Heavenly Raspberry Chocolate Mousse Cake Recipe
- Total Time: 5 hours 10 minutes
- Yield: 12 servings 1x
- Diet: Vegetarian
Description
Heavenly Raspberry Chocolate Mousse Cake is a luscious layered dessert featuring a rich chocolate cake base, a tangy raspberry layer, and a silky smooth chocolate mousse topping. This elegant cake combines the deep flavors of chocolate with the vibrant tartness of raspberries, making it perfect for special occasions or indulgent treats.
Ingredients
For the Chocolate Cake Base:
- 1 cup all-purpose flour
- 1/2 cup unsweetened cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1/2 cup granulated sugar
- 1/2 cup brown sugar
- 1/2 cup buttermilk
- 1/2 cup vegetable oil
- 2 large eggs
- 1 teaspoon vanilla extract
- 1/2 cup hot coffee or hot water
For the Raspberry Layer:
- 1 ½ cups fresh or frozen raspberries
- 2 tablespoons granulated sugar
- 1 tablespoon lemon juice
- 1 tablespoon water
- 1 tablespoon cornstarch
For the Chocolate Mousse:
- 8 oz semi-sweet chocolate (chopped)
- 2 tablespoons butter
- 2 tablespoons strong brewed coffee (optional)
- 1 ½ cups heavy cream (cold)
- 1/4 cup powdered sugar
- 1 teaspoon vanilla extract
Instructions
- Make the Cake Base: Preheat the oven to 350°F (175°C). Grease and line a 9-inch springform pan. In a large bowl, whisk together the flour, cocoa powder, baking soda, salt, and both sugars. Add the buttermilk, vegetable oil, eggs, and vanilla extract and mix until smooth. Stir in the hot coffee or hot water. Pour the batter into the prepared pan and bake for 22–25 minutes, or until a toothpick inserted in the center comes out clean. Allow the cake to cool completely in the pan.
- Make the Raspberry Layer: In a small saucepan, combine raspberries, granulated sugar, lemon juice, and water. Bring the mixture to a simmer over medium heat. In a small bowl, whisk the cornstarch with one tablespoon of water until smooth, then stir into the raspberry mixture. Continue cooking for 2–3 minutes until the mixture thickens. Remove from heat and let cool completely. Once cooled, spread the raspberry layer evenly over the cooled chocolate cake base. Refrigerate to set.
- Make the Chocolate Mousse: Melt the chopped semi-sweet chocolate, butter, and optional brewed coffee in a heatproof bowl over simmering water or in short bursts in the microwave, stirring until smooth. Allow the chocolate mixture to cool slightly. In a separate large bowl, beat the cold heavy cream with powdered sugar and vanilla extract until soft peaks form. Gently fold the whipped cream into the cooled chocolate mixture in batches, blending until smooth and fluffy.
- Assemble and Chill: Spread the chocolate mousse evenly over the raspberry layer in the pan. Smooth the top with a spatula. Cover and refrigerate for at least 4 hours or preferably overnight until the mousse is fully set.
- Serve: Before serving, garnish the cake with fresh raspberries, chocolate curls, or a dusting of cocoa powder for an elegant finish. Slice and enjoy this decadent layered dessert.
Notes
- This cake is rich and indulgent, making it perfect for celebrations and special occasions.
- For a gluten-free version, substitute all-purpose flour with a 1:1 gluten-free flour blend.
- The chocolate mousse achieves the best texture when chilled overnight.
- Strong brewed coffee is optional but enhances the depth of chocolate flavor.
- Ensure the raspberry layer is completely cooled before adding the mousse to prevent melting.
- Prep Time: 45 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking, No-Bake
- Cuisine: French-American
Nutrition
- Serving Size: 1 slice
- Calories: 460
- Sugar: 32g
- Sodium: 190mg
- Fat: 32g
- Saturated Fat: 17g
- Unsaturated Fat: 12g
- Trans Fat: 0g
- Carbohydrates: 38g
- Fiber: 3g
- Protein: 5g
- Cholesterol: 85mg