Chocolate Mousse Layer Cake
If you’re looking for a show-stopping dessert that will impress your friends and family, this Chocolate Mousse Layer Cake is just the ticket! Imagine layers of moist chocolate cake and rich, velvety mousses that melt in your mouth. This cake has become a favorite in my home, perfect for birthdays, anniversaries, or even just a cozy weekend treat. Whenever I crave something sweet and indulgent, this delightful layered cake comes to mind!
This recipe not only satisfies any chocolate lover’s dreams but is also surprisingly straightforward to make. You’ll find that each layer brings something special to the table, making it an elegant centerpiece for any occasion.
Why You’ll Love This Recipe
- Decadent Flavor: The combination of dark and white chocolate mousses creates an irresistible taste sensation.
- Impressive Presentation: With its beautiful layers and glossy ganache, this cake looks as good as it tastes!
- Family-Friendly: Everyone from kids to adults will love this rich chocolate dessert—it’s a guaranteed crowd-pleaser.
- Make-Ahead Friendly: You can prepare this cake in advance, allowing the flavors to meld beautifully in the fridge.
- Simple Ingredients: With easy-to-find ingredients, whipping up this indulgent treat is a breeze!


Ingredients You’ll Need
Gathering the right ingredients is a joyous part of creating your Chocolate Mousse Layer Cake. These are simple, wholesome ingredients that come together to make something truly special.
For the Chocolate Cake:
- 2 cups all-purpose flour
- 2 cups granulated sugar
- ½ cup Dutch-processed cocoa powder
- 1½ teaspoons baking powder
- 1½ teaspoons baking soda
- ½ teaspoon salt
- ½ cup whole milk
- 2 large eggs
- ½ cup sour cream
- ½ cup vegetable oil
- 1 teaspoon vanilla extract
- 1 teaspoon espresso powder
- 1 cup hot water
For the Chocolate Mousses:
- 4 large egg yolks
- 2 tablespoons granulated sugar
- 2 tablespoons cornstarch
- 1 teaspoon vanilla extract
- 2 cups heavy cream, divided
- 3.5 oz dark chocolate, chopped
- 4.5 oz white chocolate, chopped
For the Ganache:
- 5 oz milk chocolate, chopped
- â…“ cup heavy cream
Variations
One of the best parts about this recipe is how flexible it can be. Feel free to get creative with flavors or presentation!
- Add some fruit: Layer fresh raspberries or strawberries between the cake layers for a pop of color and flavor.
- Change up the chocolate: Use different types of chocolate, like milk or semi-sweet, depending on your preference.
- Add a hint of flavor: Infuse your mousses with orange zest or peppermint extract for a refreshing twist.
- Try different ganache toppings: Experiment with toppings like crushed nuts or shredded coconut for extra texture.
How to Make Chocolate Mousse Layer Cake
Step 1: Make the Cake Batter
Start by sifting together all your dry ingredients—flour, sugar, cocoa powder, baking powder, baking soda, and salt—in a large mixing bowl. Sifting helps blend everything evenly and removes any lumps that could affect your cake’s texture. In another bowl, whisk together your wet ingredients: eggs, milk, sour cream, oil, and vanilla until smooth. Then dissolve the espresso powder in your hot water and stir it into your wet mixture. Mixing these well ensures every bite of cake is flavorful!
Step 2: Bake the Cake Layers
Preheat your oven to 350°F (180°C). Divide the batter evenly between two 8-inch round cake pans lined with parchment paper; this helps prevent sticking! Bake for about 35 minutes or until a toothpick inserted into the center comes out clean. Once baked, let them cool completely before trimming the tops flat—this ensures even layering when you assemble your cake later.
Step 3: Prepare the Mousse Base
In a small saucepan over medium heat, gently heat 1 cup of cream with vanilla until it starts to steam (but don’t boil!). Meanwhile, whisk egg yolks with sugar and cornstarch until pale; tempering them with hot cream will help avoid scrambling! Gradually add hot cream into yolks while whisking continuously before returning everything back to heat until thickened into custard.
Step 4: Melt Chocolate and Combine
Now it’s time to create those delicious mousses! Divide your custard into two bowls—add chopped dark chocolate to one bowl and white chocolate to another. Stir until melted and smooth! Whip remaining cream into stiff peaks then fold half into each chocolate mixture; this will give you two luscious mousses ready for assembly!
Step 5: Assemble the Cake
Start with one trimmed layer of chocolate cake placed in a dessert ring or springform pan. Spread dark chocolate mousse evenly over it first—this will be rich and satisfying! Carefully layer white chocolate mousse on top next. Refrigerate for about 30 minutes so it sets nicely before adding on that second layer of cake. Chill assembled cake for at least four hours (or overnight) so everything melds together perfectly.
Step 6: Make the Ganache
To top off this beauty, heat cream in a small saucepan until steaming (again—no boiling!). Pour over chopped milk chocolate and let sit for one minute; then stir until silky smooth and glossy. Allow cooling slightly until thickened but still pourable!
Step 7: Finish the Cake
Finally! Remove your masterpiece from its mold or pan and pour that lovely ganache over top—it feels like magic! Smooth out edges gently; don’t let it drip down sides if you can help it! Decorate with chocolate curls or sprinkles if you’re feeling fancy.
And there you have it—a stunning Chocolate Mousse Layer Cake that’s sure to be adored by anyone lucky enough to have a slice! Enjoy every moment of making—and eating—it!
Pro Tips for Making Chocolate Mousse Layer Cake
Creating a beautiful and delicious Chocolate Mousse Layer Cake can be a delightful experience, and with these pro tips, you’ll be well on your way to impressing your friends and family!
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Use Room Temperature Ingredients: Bringing eggs and dairy to room temperature ensures they mix more easily into the batter, resulting in a smoother cake texture.
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Measure Ingredients Accurately: Use a kitchen scale or measuring cups for precise measurements. This helps maintain the right balance of flavors and textures in both the cake and mousse.
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Allow Layers to Cool Completely: Ensure that your cake layers are completely cool before assembling. This prevents the mousse from melting and keeps your layers crisp and defined.
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Chill Between Layers: Refrigerating each mousse layer briefly before adding the next helps them set properly, creating distinct layers that look stunning when sliced.
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Don’t Rush Ganache Cooling: Letting your ganache cool slightly before pouring over the cake allows it to thicken just enough to create a smooth, glossy finish without running off the sides.
How to Serve Chocolate Mousse Layer Cake
Presenting your Chocolate Mousse Layer Cake beautifully can elevate its appeal even more! Here are some ideas for serving this decadent dessert that will make your guests swoon.
Garnishes
- Chocolate Curls: Shave pieces of dark or white chocolate using a vegetable peeler for an elegant touch.
- Fresh Berries: Raspberries or strawberries add a pop of color and freshness that balances the richness of the cake.
- Mint Leaves: A sprig of mint not only adds visual appeal but also a refreshing aroma that complements chocolate beautifully.
Side Dishes
- Vanilla Ice Cream: A scoop of creamy vanilla ice cream provides a delightful contrast to the rich chocolate flavors and adds a comforting element.
- Whipped Coconut Cream: For a dairy-free option, whipped coconut cream is light and airy, enhancing the indulgence while keeping it plant-based.
- Chocolate Sauce: Drizzling extra chocolate sauce over individual slices can intensify the chocolate experience—perfect for true chocoholics!
- Espresso Coffee: A small cup of rich espresso pairs perfectly with the cake’s sweetness, enhancing its chocolatey notes while providing a nice after-dinner pick-me-up.
Enjoy every bite of your Chocolate Mousse Layer Cake creation, whether you’re celebrating a special occasion or simply indulging in some well-deserved dessert time!


Make Ahead and Storage
This Chocolate Mousse Layer Cake is perfect for meal prep, allowing you to whip up an impressive dessert in advance for special occasions or just to indulge yourself!
Storing Leftovers
- Cover the cake tightly with plastic wrap or store it in an airtight container.
- Keep it refrigerated for up to 3 days to maintain freshness.
- If you notice any leftover mousse or ganache, store those separately in airtight containers.
Freezing
- To freeze the cake, slice it first into individual servings.
- Wrap each slice tightly in plastic wrap, then place them in a freezer-safe bag or container.
- The cake can be frozen for up to 2 months; just make sure to label the date!
Reheating
- For best results, let the slices thaw overnight in the refrigerator before serving.
- If you prefer a warm treat, gently heat individual slices in the microwave for about 10-15 seconds.
FAQs
Here are some common questions about this delightful dessert!
Can I make the Chocolate Mousse Layer Cake ahead of time?
Absolutely! This cake is great for making ahead. You can prepare the cake layers and mousses a day prior and assemble them when ready to serve.
What makes this Chocolate Mousse Layer Cake so special?
The combination of rich dark and white chocolate mousses layered between moist chocolate cake creates a deliciously indulgent experience that’s perfect for any celebration.
Can I substitute ingredients in this recipe?
Yes! You can use dairy-free alternatives like almond milk or coconut cream if desired. Just ensure that any substitutes still provide similar textures and flavors.
How do I ensure my chocolate mousse turns out perfectly?
Make sure to properly temper the egg yolks with hot cream and whip the cream to stiff peaks before folding it into the chocolate mixtures. This helps achieve that light and airy texture!
Can I use different types of chocolate for this recipe?
Of course! You can experiment with other chocolates like semi-sweet or even flavored chocolates, depending on your taste preferences.
Final Thoughts
I hope you find joy in creating this Chocolate Mousse Layer Cake as much as I do! It’s not just a dessert; it’s a celebration of rich flavors and textures that will impress anyone who takes a bite. Don’t hesitate to try it out, whether for a special occasion or simply as an indulgence for yourself. Happy baking!
Chocolate Mousse Layer Cake
If you’re in search of a dessert that brings both elegance and indulgence to the table, look no further than this Chocolate Mousse Layer Cake. This show-stopping treat features layers of moist chocolate cake paired with rich dark and white chocolate mousses, creating a delightful confection that melts in your mouth. Perfect for birthdays, anniversaries, or simply as a weekend dessert, this cake is sure to impress your guests as much as it satisfies your sweet cravings.
- Prep Time: 30 minutes
- Cook Time: 35 minutes
- Total Time: 1 hour 5 minutes
- Yield: Serves approximately 12 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- 2 cups all-purpose flour
- 2 cups granulated sugar
- ½ cup Dutch-processed cocoa powder
- 1½ teaspoons baking powder
- 1½ teaspoons baking soda
- ½ teaspoon salt
- ½ cup whole milk
- 2 large eggs
- ½ cup sour cream
- ½ cup vegetable oil
- 1 teaspoon vanilla extract
- 1 teaspoon espresso powder
- 1 cup hot water
- 4 large egg yolks
- 2 tablespoons granulated sugar
- 2 tablespoons cornstarch
- 1 teaspoon vanilla extract
- 2 cups heavy cream, divided
- 3.5 oz dark chocolate, chopped
- 4.5 oz white chocolate, chopped
- 5 oz milk chocolate, chopped
- â…“ cup heavy cream
Instructions
- Preheat oven to 350°F (180°C) and prepare two 8-inch round cake pans.
- Combine dry ingredients in one bowl and wet ingredients in another; mix well.
- Divide batter into prepared pans and bake for 35 minutes until cooked through.
- For the mousse, heat cream and whisk egg yolks with sugar and cornstarch; combine with melted chocolates.
- Assemble by layering cake with dark mousse followed by white mousse. Refrigerate until set.
- Prepare ganache with heated cream poured over chopped milk chocolate; cool slightly before topping the cake.
Nutrition
- Serving Size: 1 serving
- Calories: 410
- Sugar: 34g
- Sodium: 200mg
- Fat: 26g
- Saturated Fat: 14g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 41g
- Fiber: 3g
- Protein: 6g
- Cholesterol: 70mg