Mini Heart Cake with Chocolate Mousse

Name: Mini Heart Cake with Chocolate Mousse
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Yield: 4 servings
Ingredients: 1 cup all-purpose flour; 1/2 cup unsweetened cocoa powder; 1 tsp baking powder; 1/2 tsp baking soda; 1/4 tsp salt; 1/2 cup granulated sugar; 1/2 cup unsalted butter, softened; 2 large eggs; 1 tsp vanilla extract; 1/2 cup buttermilk; 1 cup heavy cream; 4 oz semi-sweet chocolate, melted; 1/4 cup powdered sugar; 1 tsp vanilla extract; 2 large egg whites; 1/4 tsp cream of tartar; Fresh berries; Chocolate shavings

Highlighted under: Everyday Baking Inspiration

I love creating desserts that celebrate special moments, and this Mini Heart Cake with Chocolate Mousse is one of my favorites. It's perfect for romantic occasions or just to add a sprinkle of joy to any day. The light and airy mousse pairs beautifully with the delicate cake, creating a delightful balance of chocolate richness and airy sweetness. Best of all, it's surprisingly easy to prepare, making it an accessible treat for everyone to enjoy. I can’t wait for you to try this recipe!

Created by

Kate Phillips

Last updated on 2026-01-13T06:42:36.935Z

When I first decided to make this Mini Heart Cake, I knew I wanted something that was both visually stunning and delicious. The process of layering the chocolate mousse in between the tender cake layers was absolutely delightful, and I was thrilled with how it turned out. One tip I learned is to let the mousse chill before assembling; this helps it hold its shape better when you cut into the cake later.

The flavors meld beautifully, creating a luscious experience with each bite. I love serving these individual cakes at gatherings, as they offer a personal touch that’s sure to impress. Presentation matters, so remember to garnish with berries for a pop of color!

Why You'll Love This Recipe
Rich chocolate flavor paired with fresh orange zest
Creamy texture that melts in your mouth
Perfect for celebrations or as a sweet indulgence

The Importance of Ingredients

Quality ingredients are key to achieving the best results in this Mini Heart Cake with Chocolate Mousse. For the cake, using unsweetened cocoa powder with a rich taste elevates the chocolate flavor, while fresh eggs contribute to the cake's moisture and structure. The buttermilk not only adds a subtle tang but also reacts with the baking soda, enhancing the cake's fluffiness. Always ensure your butter is softened to room temperature for easy creaming with sugar, which is crucial for the cake's texture.

When it comes to the chocolate mousse, the type of chocolate you choose significantly influences the final flavor. Semi-sweet chocolate works perfectly here, striking a balance between sweetness and richness. If you prefer a darker flavor profile, feel free to substitute with bittersweet chocolate; just adjust the sugar to prevent the mousse from becoming overly sweet. Using heavy cream is essential too, as it whips up to a creamy consistency that gives the mousse its luxurious texture.

Techniques for Success

Mastering the folding technique is critical for creating a light and airy chocolate mousse. When combining the whipped cream with the melted chocolate, make sure to gently incorporate the two without deflating the air you've whipped into the cream. A rubber spatula is ideal for this task, as it allows you to lift and fold the mixture rather than stirring it, which could lead to a denser mousse.

Timing can make all the difference in your cake. To ensure it bakes perfectly, start checking for doneness a few minutes early; the ideal cake should spring back when touched lightly, and a toothpick should come out clean. Once baked, allowing the cakes to cool fully is crucial before assembling; if they're still warm, the mousse may melt and create a gooey mess. Patience pays off here!

Ingredients

For the Cake

1 cup all-purpose flour
1/2 cup unsweetened cocoa powder
1 tsp baking powder
1/2 tsp baking soda
1/4 tsp salt
1/2 cup granulated sugar
1/2 cup unsalted butter, softened
2 large eggs
1 tsp vanilla extract
1/2 cup buttermilk

For the Chocolate Mousse

1 cup heavy cream
4 oz semi-sweet chocolate, melted
1/4 cup powdered sugar
1 tsp vanilla extract
2 large egg whites
1/4 tsp cream of tartar

For Garnish

Fresh berries
Chocolate shavings

Instructions

Steps

Make the Cake

Preheat your oven to 350°F (175°C). Grease and flour heart-shaped cake pans. In a bowl, whisk together flour, cocoa, baking powder, baking soda, and salt. In another bowl, beat sugar and butter until light and fluffy. Add eggs one at a time, followed by vanilla. Gradually mix in dry ingredients, alternating with buttermilk until fully combined. Divide batter into pans and bake for 25-30 minutes, or until a toothpick comes out clean. Cool completely.

Prepare the Chocolate Mousse

In a large bowl, whip the heavy cream until soft peaks form, then gradually add powdered sugar and vanilla. In another bowl, whip egg whites with cream of tartar until stiff peaks form. Gently fold the melted chocolate into the whipped cream, then carefully fold in the egg whites until fully incorporated. Chill for 15 minutes.

Assemble the Cake

Once the cake layers are cooled, place one layer on a serving plate. Spread a generous amount of the chocolate mousse on top, then add the second layer of cake. Top with remaining mousse. Chill for at least 30 minutes before serving.

Garnish and Serve

Before serving, decorate the cake with fresh berries and chocolate shavings to enhance its presentation. Cut into slices and enjoy!

Pro Tips

For an extra flavor twist, consider adding a splash of orange liqueur to the mousse for a citrusy kick that complements the chocolate beautifully.

Serving Suggestions

This Mini Heart Cake is versatile when it comes to serving. It pairs beautifully with a scoop of vanilla ice cream or a dollop of fresh whipped cream, adding an extra layer of sweetness that complements the rich chocolate. For a more refreshing note, consider pairing your slices with a side of citrus salad or fresh mint leaves, which brighten the dessert's flavor profile.

Another delightful option is to create individual mini cakes using muffin tins; simply adjust the baking time to around 18-20 minutes. Perfectly portioning your treats can enhance the dessert experience for a party or a romantic dinner, allowing guests to enjoy their own cake without the hassle of slicing.

Make-Ahead and Storage

Both the cake and chocolate mousse can be made ahead of time, making this dessert a great option for stress-free entertaining. The cake can be baked a day in advance; just wrap it tightly in plastic wrap once cooled to maintain freshness. You can also prepare the mousse up to 24 hours ahead of time, storing it covered in the refrigerator until you’re ready to assemble the cake, ensuring it retains a smooth texture.

If you have leftovers, this cake keeps well in the fridge for up to three days. To preserve the mousse's airy texture, cover it loosely with plastic wrap rather than sealing it tightly, which can trap moisture and affect consistency. This cake also freezes well; just slice it and layer between parchment paper before wrapping it in plastic and aluminum foil, ensuring it stays fresh for up to three months.

Questions About Recipes

→ Can I make this cake ahead of time?

Yes, you can make the cake layers in advance and store them in the refrigerator. Just assemble the mousse layer on the day you plan to serve.

→ What can I substitute for buttermilk?

You can make your own buttermilk by mixing 1 tablespoon of lemon juice or vinegar with enough milk to make 1 cup, then let it sit for 5 minutes.

→ Can I use a different type of chocolate?

Absolutely! Feel free to use dark chocolate for a richer taste or white chocolate for a sweeter version.

→ Is there a way to make this recipe gluten-free?

Yes, by substituting all-purpose flour with a gluten-free flour blend, you can easily make this dessert gluten-free.