This delicious layered Raspberry Mousse Cake has a moist chocolate cake base, a light and tangy raspberry white chocolate mousse, and a silky chocolate ganache topping. A showstopper perfect for Valentine's Day, Galentine's Day, or any occasion!

This amazing chocolate raspberry mousse cake topped with fresh raspberries is a variation of my popular dark chocolate mousse cake. The raspberry white chocolate mousse layer is delightfully tart and tangy, which pairs deliciously with the rich dark chocolate cake. One bite and you'll be hooked!
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♡ Why You Will Love This Raspberry Mousse Cake
- The mousse is made without eggs and gelatin. You'd be surprised by how stable the raspberry mousse layer is, especially without gelatin or eggs. The key is using white chocolate and freeze-dried raspberries.
- Easy to make. The chocolate cake has very minimal steps and takes less than 10 minutes to make, and the raspberry white chocolate mousse whips up in less than 20 minutes.
- Not too sweet. This cake looks decadent, but isn't sweet at all! The raspberry mousse adds a wonderful tartness that balances the flavors.
- Perfect for all occasions. This stunning layered cake is perfect for Valentine's Day, Galentine's Day, Mother's Day, Easter, Father's Day, birthdays, parties, anniversaries or just because!
Looking for more raspberry desserts? Try my raspberry & white chocolate blondies, raspberry almond cake, and raspberry cheesecake donuts!

Ingredient Notes
Here are some notes about all the ingredients used in this Raspberry Mousse Cake. Quantities and full instructions are in the recipe card below!

Chocolate Cake
- All-Purpose Flour - I recommend using a kitchen scale to measure your flour with for best results. Adding too much flour can make your cake dry and dense rather than light and moist.
- Unsweetened Cocoa Powder - Make sure you're using Dutch-process cocoa powder. Natural cocoa powder is acidic and would not work with the quantity of leveners we have in this recipe.
- Leveners - We are using a combination of baking powder and baking soda for the perfect rise and texture.
- Fine Espresso Powder - Totally optional, but enhances the chocolate flavor.
- Salt - Rounds out the flavors and balances the sweetness.
- White Sugar - Adds a bit of sweetness and moisture.
- Neutral Oil - The oil makes the cake light and moist.
- Full-Fat Sour Cream - Adds moisture.
- Whole Egg - Adds structure.
- Vanilla Paste or Extract - For flavor.
- Boiling Hot Water - The hot water blooms the espresso and cocoa powder.

Raspberry White Chocolate Mousse + Chocolate Ganache
- White Chocolate - I'm using white chocolate bars as it's easier to melt, but you can also use white chocolate chips.
- Cream Cheese - Make sure to use full-fat cream cheese blocks.
- Heavy Cream - Heavy cream will be whipped and folded into the mousse filling.
- Freeze-Dried Raspberries - You'll need to use nearly 2 bags. We will be grinding it into a fine powder and then sifting it to remove the seeds.
- Powdered Sugar - Also known as icing sugar or confectioners sugar, will lightly sweeten the mousse filling.
- Vanilla - For flavor. I use vanilla paste, but you can also use vanilla extract.
- Dark Chocolate Chips + Heavy Cream - For the chocolate ganache.
*See recipe card for quantities.
Substitutions
For the Cake 🍰
- Sour Cream - You can easily replace with full-fat Greek yogurt.
- Neutral Oil - You can use avocado oil, vegetable oil, canola oil, refined coconut oil or grapeseed oil.
- Espresso Powder - You can omit if you don't have it in your pantry.
- Boiling Hot Water - You can also use hot coffee.
For the Mousse
- White Chocolate Bars - White chocolate bars melt more smoothly, but you can use white chocolate chips in a pinch.
- Freeze-Dried Raspberries - You can replace with freeze-dried strawberries.
Step-By-Step Instructions
Here are step-by-step photos and instructions on how to make this chocolate Raspberry Mousse Cake! Please find detailed instructions in the recipe card at the end of this post.
How to Make Chocolate Cake

Step 1. In a large bowl, whisk together sugar, oil, sour cream, egg and vanilla.

Step 2. Sift dry ingredients into the wet ingredients and whisk until nearly combined. The batter will be thick.

Step 3. Add hot boiling water and gently whisk until just combined. Do not overmix.

Step 4. Bake in a preheated oven at 350ºF (180ºc) for about 24 to 28 minutes or until an inserted toothpick comes out clean.
How to Make Raspberry Mousse

Step 5. Melt white chocolate and heavy cream until smooth. Set aside to cool.

Step 6. In a medium bowl, whip heavy cream and powdered sugar until firm peaks. Set in the fridge until needed.

Step 7. In a large bowl, and using an electric mixer, beat softened cream cheese and powdered sugar until lump free.

Step 8. Added melted white chocolate and whip until combined.

Step 9. Add vanilla and sifted raspberry powder and mix until incorporated.

Step 10. In 2 additions, fold the whipped cream into the raspberry mousse mixture until just combined. Do not overmix.


Step 11. Place cooled chocolate cake onto a serving dish. Wrap the sides of the cake with a cake collar. Then spread the raspberry mousse on top of the cake layer. Cover and chill for at least 4 hours.
💡 Tip
Please note that a cake collar (acetate sheet) will give you cleaner sides. If you would like to use parchment paper, lightly spray the paper with oil to help the mousse release more easily.

Step 12. Make chocolate ganache by combining hot cream and chocolate.

Step 13. Pour ganache on top of the raspberry mousse layer. Let set in the fridge for 10 to 15 minutes. Slice and enjoy!

Storage
- Refrigerator - Store covered in the fridge for up to 5 days.
- Freezer - Wrap individual cake slices in plastic wrap. Once completely frozen, store in freezer bags. Thaw in the fridge overnight or at room temperature before consuming.
⭐️ Expert Tips
Use a kitchen scale to weigh all your ingredients. Baking in grams, rather than volume, is the best and most accurate way to bake! All my recipes include gram conversions based on King Arthur's Weight Chart.
Make sure the cream cheese is softened. This will ensure a smooth filling. If you're pressed for time, cut into cubes and microwave it in 8 second intervals until just soft.
Melt the white chocolate completely. If not, you'll have little chunks of white chocolate in your mousse filling. During testing, I found that white chocolate chips took a bit longer to fully melt. You can strain if needed.
For the perfect texture, let the cake sit at room temperature for 15 minutes before serving.
FAQ
Absolutely! You can made this cake 2 days ahead. Be sure to cover it, and top with ganache the day you plan on serving it.
Absolutely! Bake your cake in a regular 9-inch (23cm) pan. Place your cooled cake on a serving platter and then wrap the cake with a long sheet of acetate (aka cake colar). It will be sturdy enough without needing to assemble in a pan.
Freeze-drying is a process in which 98% of water is removed from a product while also retaining its nutrients and flavor. Freeze-drying or lyophilization removes water by freezing a product at a low temperature and then placing it under a vacuum. This allows the ice to change directly from a solid state to vapor, all while bypassing the liquid phase. This leaves the fruit dry, light and crisp.

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📖 Recipe

Raspberry Mousse Cake
Equipment
- 9" (23cm) Springform Pan or Regular Pan (see notes below)
- Mixing Bowls
- Electric Mixer
- Measuring Cups/Spoons
INGREDIENTS
Chocolate Cake
- 1 Cup (120g) All-Purpose Flour
- ½ Cup (42g) Dutch Cocoa Powder
- 1 Teaspoon Fine Espresso Powder (optional)
- ¾ Teaspoon Baking Powder
- ½ Teaspoon Baking Soda
- ¼ Teaspoon Fine Sea Salt
- ¾ Cup + 2 Tablespoons (175g) White Granulated Sugar
- ⅓ Cup + 1 Tablespoon (80g) Neutral oil (avocado, vegetable, canola)
- ⅓ Cup (76g) Full-Fat Sour Cream room temp
- 1 Whole Large Egg room temp
- 1 Teaspoon Pure Vanilla Extract
- ½ Cup (113g) Boiling Water
Raspberry White Chocolate Mousse
- 8 Ounces (227g) White Chocolate Bars finely chopped
- 1 ½ Cups (340g) Heavy Cream, divided
- 16 Ounces (454g | 2 Blocks) Full-Fat Cream Cheese softened
- ½ Cup (56g) Powdered Sugar, divided
- 2 Cup (45g) Freeze-Dried Raspberries ground into powder
- 2 Teaspoon Vanilla Paste or Extract
Chocolate Ganache
- ⅔ Cup (151g) Heavy Cream
- 5 Ounces (141g) Dark Chocolate Chips (I used 60%)
Instructions
Chocolate Cake
- Preheat Oven & Prep Pan - Preheat oven to 350ºF (180ºC). Grease and line a 9-inch (23cm) springform pan or regular pan (see notes below) with parchment paper.
- Combine Dry Ingredients - In a small mixing bowl, whisk together the flour, Dutch cocoa powder, fine espresso powder, baking powder, baking soda, and salt.1 Cup (120g) All-Purpose Flour½ Cup (42g) Dutch Cocoa Powder1 Teaspoon Fine Espresso Powder (optional)¾ Teaspoon Baking Powder½ Teaspoon Baking Soda¼ Teaspoon Fine Sea Salt
- Combine Wet Ingredients - In a large bowl and using a hand whisk, whisk together sugar, oil, sour cream, egg and vanilla until well combined.¾ Cup + 2 Tablespoons (175g) White Granulated Sugar⅓ Cup + 1 Tablespoon (80g) Neutral oil (avocado, vegetable, canola)⅓ Cup (76g) Full-Fat Sour Cream1 Whole Large Egg1 Teaspoon Pure Vanilla Extract
- Combine Dry & Wet Ingredients - Sift in the dry ingredients, ensuring the cocoa powder lumps are push through the sieve. Gently whisk the dry and wet ingredients together until nearly incorporated. The batter will be thick at this point and that's okay.
- Add Hot Water - Add boiling hot water and gently whisk until just combined. The batter will thin out a bit. Do not overmix.½ Cup (113g) Boiling Water
- Bake - Pour cake batter into your prepared pan and bake for 24 to 28 minutes or until an inserted toothpick comes out clean. Timing can vary on your oven, so keep an eye on it.
- Cool - Cool on a wire rack for 10 minutes, then remove the cake from the pan and let cool completely at room temperature or in the fridge.
Raspberry White Chocolate Mousse
- Melt White Chocolate - Add finely chopped white chocolate and ¼ cup (56g) heavy cream to a heatproof medium bowl. Place bowl over a small pot of simmering water, making sure the bottom doesn't touch the water, and heat until the chocolate is melted and smooth. You can also melt in the microwave in 15 second bursts, stirring in between. Cool for 10 to 15 minutes.8 Ounces (227g) White Chocolate Bars
- Whip Heavy Cream - In a medium bowl, add 1 ¼ cup (284g) heavy cream and ¼ cup (28g) powdered sugar. Using an electric mixer, whip until firm peaks form. Set in the fridge until needed.
- Beat Cream Cheese - In a large mixing bowl, beat softened cream cheese and ¼ cup (28g) powdered sugar until smooth and lump-free.16 Ounces (454g | 2 Blocks) Full-Fat Cream Cheese
- Add White Chocolate - Add slightly cooled melted white chocolate into the cream cheese mixture and whip until combined.
- Add Raspberry Powder + Vanilla - In a food processor or grinder, pulse freeze-dried raspberries into a fine powder. Sift the raspberry powder into the cream cheese mixture, along with the vanilla, and whip until well combined. Taste and add more powdered sugar if needed.2 Cup (45g) Freeze-Dried Raspberries2 Teaspoon Vanilla Paste or Extract
- Fold in Whipped Cream - Remove the whipped cream from the fridge. In 2 additions, fold the cream into the raspberry mousse mixture until just combined. Do not overmix.
- Assemble the Cake - Place completely cooled chocolate cake onto a serving dish. Wrap the sides of the cake with a 29-inch (74cm) long piece of acetate (cake collar). Tape the acetate together at the ends to prevent it from unraveling. If you're using parchment paper, line the springform pan bottom disc with a parchment paper. Place the cake on the disc, then wrap the sides of cake with parchment paper that has been lightly spray with oil. Lastly, secure the ring.
- Chill the Cake - Spread the raspberry mousse on top of the cake layer. Cover and chill for at least 4 hours.
Chocolate Ganache
- In a small saucepan, and over medium-low heat, bring heavy cream to a low simmer until it reaches about 185ºF (85ºC). Off heat, add the chocolate chips or finely chopped chocolate into the pan, cover and let stand untouched for 4 to 5 minutes. Using a silicone spatula, slowly stir until smooth and combined. If the chocolate hasn't completely melted, return to a low flame and heat until completely smooth.⅔ Cup (151g) Heavy Cream5 Ounces (141g) Dark Chocolate Chips (I used 60%)
- Remove the chilled cake from the fridge and peel off the acetate/parchment paper. If needed use an offset spatula to smooth the sides.
- Pour the chocolate ganache on top the cake and using an offset spatula, spread it to the edges. Before serving, you can place the cake back into the fridge for 10 to 15 minutes to let the ganache set. Slice and enjoy!!








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