If you’re searching for an unforgettable dessert that dazzles both the eyes and the taste buds, look no further than the Ruby Chocolate Strawberry Mousse Cake. This dazzling fusion of fruity, creamy, and chocolatey layers delivers a dessert experience that feels like a celebration in every bite. With its striking pink hues and a flavor profile balancing sweet-tart strawberries and the unique, berry-noted richness of ruby chocolate, this cake is destined to steal the show at any gathering or special occasion.

Ingredients You’ll Need
Every element in this cake comes together to create an indulgent masterpiece. Each ingredient, from the vibrant strawberries to the stunning ruby chocolate, serves a delicious purpose, adding depth, texture, and irresistible color to your cake.
- All-purpose flour: Provides the sturdy yet tender structure for the ruby chocolate base.
- Unsweetened cocoa powder: Lends a subtle chocolate backbone, enhancing the ruby chocolate’s berry notes.
- Baking powder: Ensures your cake base rises beautifully and keeps it airy.
- Salt: Just a pinch to balance and accentuate all the beautiful flavors.
- Unsalted butter: For rich creaminess and a soft crumb.
- Granulated sugar: Adds the ideal amount of sweetness to the cake.
- Large eggs: These bring cohesiveness and richness to the batter.
- Vanilla extract: Adds warmth and complexity to both the cake base and mousse.
- Whole milk: Moisturizes the batter and keeps the cake base melt-in-your-mouth tender.
- Melted ruby chocolate: The star ingredient, infusing the base with a beautiful color and subtle fruitiness unique to ruby chocolate.
- Fresh strawberries: Essential for the mousse layer—choose ripe ones for maximum flavor and color.
- Heavy cream: Whips into luscious peaks for the mousse and makes the ganache silky-smooth.
- Powdered sugar: Sweetens the strawberry mousse without grittiness.
- Gelatin dissolved in water: Firmly sets the mousse so your layers look perfect when sliced.
- Ruby chocolate (for ganache): The finishing touch that envelops the cake in a glossy, jewel-like coating.
How to Make Ruby Chocolate Strawberry Mousse Cake
Step 1: Prepare the Baking Tin
Start by preheating your oven to 350°F (175°C) and lining a 9-inch round cake pan with parchment paper. This ensures easy release and neat edges, setting the stage for your showstopping Ruby Chocolate Strawberry Mousse Cake.
Step 2: Mix the Dry Ingredients
Whisk together your flour, unsweetened cocoa powder, baking powder, and a pinch of salt in a medium bowl. Each of these will bring balance, loft, and that subtle chocolaty hint to your base.
Step 3: Cream the Butter and Sugar
In a larger bowl, beat your softened butter and granulated sugar until the mixture turns pale and creamy. Don’t rush this part—creaming is what gives your cake a soft, light crumb. Add eggs one at a time, mixing well after each, then stir in the vanilla for added depth.
Step 4: Combine Wet and Dry Ingredients
Gradually incorporate the dry ingredients into the wet mixture, alternating with additions of whole milk and melted ruby chocolate. This keeps the batter smooth and prevents overmixing. The ruby chocolate lends both color and that signature tangy berry note to your cake base.
Step 5: Bake the Ruby Chocolate Base
Pour the batter into your prepared pan and smooth the top. Bake for 25 to 30 minutes, or until a toothpick poked in the center emerges clean. Let the base cool completely—this keeps the strawberry mousse from melting or sliding!
Step 6: Make the Strawberry Mousse
Blend your fresh strawberries until smooth and vibrant. Whip heavy cream and powdered sugar together until you have stiff peaks, then gently fold in the strawberry puree and vanilla extract. Lastly, stir in the dissolved gelatin to set the mousse. The result: a dreamy, cloudlike layer bursting with real strawberry flavor.
Step 7: Assemble Cake and Chill
Once the base has cooled, spread the strawberry mousse evenly over it, smoothing out the top. Refrigerate for at least 4 hours so the mousse layer sets firm and beautiful—patience here means flawless slices later.
Step 8: Prepare the Ruby Chocolate Ganache
Melt the ruby chocolate together with a splash of heavy cream until smooth and glossy. Allow the ganache to cool slightly before pouring it over the chilled mousse layer. This delicate topping locks in moisture and adds a dazzling sheen.
Step 9: Final Chill Before Serving
Pop the cake back in the fridge for another hour to let the ganache firm up. This waiting game makes the final presentation of your Ruby Chocolate Strawberry Mousse Cake truly irresistible.
How to Serve Ruby Chocolate Strawberry Mousse Cake

Garnishes
A dramatic cake like this deserves a little glam! Try scattering shaved ruby chocolate, fresh strawberry slices, or edible petals over the glossy ganache for eye-catching flair. Even a dusting of powdered sugar or a few mint leaves will make your Ruby Chocolate Strawberry Mousse Cake look as special as it tastes.
Side Dishes
Since this cake is already lusciously rich, it shines alongside something bright and refreshing, like a citrusy fruit salad or even small scoops of lemon or raspberry sorbet. The interplay of tart and creamy flavors will keep every bite of your Ruby Chocolate Strawberry Mousse Cake exciting.
Creative Ways to Present
For a party-ready look, serve individual slices with a swirl of whipped cream and a drizzle of ruby chocolate sauce. Or cut the cake into petite cubes and stack them on a tiered platter for an elegant dessert bar centerpiece. Mini mouse cakes made in ramekins are also a fun twist for dinner parties or romantic evenings.
Make Ahead and Storage
Storing Leftovers
Cover any leftover Ruby Chocolate Strawberry Mousse Cake tightly and refrigerate for up to 3 days. The mousse will stay fresh and velvety, while the ganache keeps everything moist and satisfying. If you’re making the cake for an event, it actually tastes even better the next day, once the flavors have mingled!
Freezing
You can freeze fully assembled slices for up to a month, just be sure to wrap each piece in plastic wrap and then foil to prevent freezer burn. Thaw overnight in the fridge to keep the mousse layer delightfully creamy and the ganache glossy.
Reheating
While this cake is truly meant to be served chilled, should you wish to soften it slightly, let it sit at room temperature for 10 to 15 minutes before serving. Reheating in a microwave is not recommended, as it can melt the mousse and ganache layers.
FAQs
Can I use white chocolate instead of ruby chocolate?
You can swap in white chocolate for a similar creamy texture if you’re unable to find ruby chocolate, but you’ll lose that signature berry tang and lovely pink color that makes the Ruby Chocolate Strawberry Mousse Cake truly unique.
What’s the best way to dissolve gelatin for the mousse?
Sprinkle the gelatin over cold water and let it bloom for a few minutes, then gently warm it until fully dissolved before adding to your strawberry mixture. This ensures a smooth, lump-free mousse every time.
Is it possible to make this cake gluten-free?
Absolutely! Simply use your favorite 1:1 gluten-free flour blend in place of all-purpose flour and double-check that your baking powder is gluten-free. The texture will remain soft and luscious.
Can I use frozen strawberries for the mousse?
Yes, just thaw and drain them well before blending, as extra liquid can thin out the mousse. Fresh strawberries will give you the brightest flavor and color, but frozen work in a pinch.
How do I prevent the ganache from melting the mousse?
Allow the ganache to cool for several minutes before pouring it on top of the well-chilled mousse layer. This way, it will set smoothly over your Ruby Chocolate Strawberry Mousse Cake without disturbing the mousse.
Final Thoughts
I can’t wait for you to create and share this Ruby Chocolate Strawberry Mousse Cake—it’s the kind of dessert that’s sure to make memories! You’ll fall in love with every layer, from the blushing ruby chocolate base to that airy, berry-rich mousse and the stunning ganache. Bring this beauty to life in your own kitchen, and watch the smiles follow. Happy baking!