Heavenly Raspberry Chocolate Mousse Cake

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Indulgent doesn’t even begin to describe this Heavenly Raspberry Chocolate Mousse Cake. Picture this: layers of moist chocolate cake sandwiching a rich, airy raspberry-infused chocolate mousse, topped with a glossy ganache and fresh berries. It’s the kind of dessert that stops conversations and starts photo ops.

Whether you’re celebrating something special or just in the mood for something decadently delicious, this cake brings together the tangy brightness of raspberries with the luscious depth of dark chocolate in perfect harmony. It’s a showstopper that’s easier to pull off than it looks—a true win-win for bakers and sweet tooths alike.

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What Kind of Chocolate Should I Use?

Dark chocolate works best for a balanced mousse that isn’t overly sweet. Aim for 60% to 70% cacao for a deep, luxurious flavor. You can also mix in a touch of milk chocolate if you prefer a smoother finish.

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Ingredients for the Heavenly Raspberry Chocolate Mousse Cake

• 1 1/4 cups all-purpose flour
• 1/2 cup unsweetened cocoa powder
• 1 1/2 tsp baking powder
• 1/2 tsp baking soda
• 1/4 tsp salt
• 3/4 cup granulated sugar
• 1/2 cup light brown sugar
• 2 large eggs
• 1/2 cup vegetable oil
• 1 tsp vanilla extract
• 1/2 cup buttermilk
• 1/2 cup hot water
• 1 1/2 cups fresh raspberries
• 1 tbsp sugar (for raspberries)
• 2 cups heavy whipping cream
• 1/4 cup powdered sugar (for mousse)
• 8 oz dark chocolate, chopped (for mousse)
• 1 tsp gelatin (optional, for extra firmness)
• 1/4 cup cold water (to bloom gelatin)
• 1/2 cup heavy cream (for ganache)
• 4 oz dark chocolate (for ganache)

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How To Make the Heavenly Raspberry Chocolate Mousse Cake

Step 1: Make the Chocolate Cake Layers

Preheat your oven to 350°F (175°C). Grease and line two 8-inch round cake pans. In a large bowl, whisk together the flour, cocoa powder, baking powder, baking soda, and salt.

In a separate bowl, beat the eggs and both sugars until light and fluffy. Add in the oil, vanilla, and buttermilk. Mix until smooth, then slowly add the dry ingredients. Stir in hot water until fully combined. Divide batter between pans and bake for 22–25 minutes. Let cakes cool completely.

Step 2: Prepare the Raspberry Puree

Mash 1 cup of fresh raspberries with 1 tablespoon sugar. Strain to remove seeds. Set aside to cool.

Step 3: Make the Chocolate Mousse

Melt 8 oz dark chocolate and let it cool slightly. If using gelatin, bloom it in cold water for 5 minutes, then microwave for 10 seconds to dissolve. Whip 2 cups of heavy cream with powdered sugar to soft peaks. Fold in the raspberry puree and melted chocolate. Add gelatin if using. Chill mousse for 30 minutes before using.

Step 4: Assemble the Cake

Place one cake layer on a serving plate. Spread a thick layer of raspberry chocolate mousse. Add the second cake layer and gently press. Chill in the fridge for 1 hour.

Step 5: Make the Ganache and Finish

Heat 1/2 cup heavy cream to just before boiling, then pour over 4 oz dark chocolate. Let sit for 1 minute, then stir until smooth. Pour over the top of the chilled cake and let it drip down the sides. Top with the remaining raspberries for garnish.

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Serving and Storing the Heavenly Raspberry Chocolate Mousse Cake

This cake is best served chilled to keep the mousse firm and luscious. Slice with a warm knife for the cleanest cuts, and top each slice with extra berries or a dollop of whipped cream for flair.

To store, cover tightly and refrigerate for up to 4 days. You can also freeze slices for up to a month; just wrap them individually and thaw overnight in the fridge.

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Frequently Asked Questions

Can I use frozen raspberries instead of fresh?

Yes, just thaw them completely and drain any excess liquid before mashing.

How do I prevent the mousse from being too runny?

Chill it before assembling, and use gelatin if you want a firmer texture.

Can this be made ahead?

Absolutely! You can bake the cakes and prepare the mousse a day in advance, then assemble and chill overnight.

What if I don’t have buttermilk?

Substitute with regular milk plus 1 tsp of vinegar or lemon juice—let it sit for 5 minutes.

How do I get clean layers?

Use a cake ring or acetate sheet when assembling to keep everything neat.

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Want More Cake Ideas with a Twist?

If this Heavenly Raspberry Chocolate Mousse Cake has you dreaming of more layered delights, check these out:

• Try the Cherry Chocolate Cheesecake for a fruity and tangy chocolate blend.
• Craving hazelnut bliss? These Nutella French Toast Casserole bites are pure comfort.
• Brighten up your mornings with our Raspberry Crescent Rolls.
• For something fall-inspired, the Brown Sugar Maple Cookies are worth baking.
• Need a chocolate fix? These Chocolate Peanut Butter Dream Bars are a no-bake hit.

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📌 Save this recipe to your Pinterest dessert board so it’s ready for the next special occasion.

And I’d love to see your take on it! Did you layer it differently? Use white chocolate instead? Let’s chat in the comments.

Looking for more desserts that wow? Follow me on Pinterest @NinaDishes where I post daily indulgences and weeknight wonders.

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