Mini Heart Cake with Vanilla Bean Frosting

Name: Mini Heart Cake with Vanilla Bean Frosting
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Yield: 8 servings
Ingredients: 1 cup all-purpose flour; 1 cup granulated sugar; 1/2 cup unsweetened cocoa powder; 1 tsp baking powder; 1/2 tsp baking soda; 1/4 tsp salt; 1/2 cup buttermilk; 1/4 cup vegetable oil; 1 large egg; 1 tsp vanilla extract; 1/2 cup boiling water; 1/2 cup unsalted butter, softened; 2 cups powdered sugar; 1/4 cup heavy cream; 1 tsp vanilla extract; 1/2 vanilla bean, seeds scraped

Highlighted under: Oven Recipes

I love baking, especially when I can create something that looks as delightful as it tastes. This Mini Heart Cake with Vanilla Bean Frosting is not just adorable but also incredibly delicious. It's perfect for anniversaries, Valentine's Day, or just because you feel like treating yourself and loved ones. The moist chocolate cake complements the creamy, aromatic vanilla bean frosting beautifully. With a few simple ingredients, I can whip up a heart-shaped dessert that garners smiles and joy, making it a favorite in our home.

Created by

Greer Montgomery

Last updated on 2026-01-13T06:05:36.242Z

When I first attempted this Mini Heart Cake, I was surprised by how simple it was to create something so sweet and charming. The secret to achieving that moist texture lies in the buttermilk and the precise mixing of the batter. I remember the warm smell of chocolate wafting through the kitchen as it baked, and it instantly lifted my spirits.

The frosting is where I think the real magic happens. Using real vanilla beans makes all the difference, imparting a rich flavor that takes the cake to the next level. I recommend letting the cake cool completely before frosting to ensure a beautifully smooth finish.

Why You'll Love This Recipe
Rich chocolate flavor that pairs perfectly with the creamy frosting
Adorable heart shape that's perfect for sharing on special occasions
Simple ingredients that you likely already have in your pantry

The Importance of Buttermilk

In this Mini Heart Cake recipe, buttermilk is a crucial ingredient that enhances the cake's moistness and richness. The acidity in buttermilk reacts with the baking soda, resulting in a beautifully tender crumb. If you don't have buttermilk on hand, you can easily substitute it by mixing one tablespoon of vinegar or lemon juice with a cup of regular milk, allowing it to sit for about five minutes until slightly thickened.

Buttermilk not only adds moisture but also imparts a subtle tang that balances the sweetness of the cake. When baking, using buttermilk can lead to a more flavorful and balanced dessert. Be sure to measure it accurately, as too much liquid can make the cake dense instead of fluffy.

Perfecting Your Frosting

The vanilla bean frosting is what makes this cake truly special. To achieve the perfect consistency, start by ensuring your butter is softened at room temperature; this allows it to cream smoothly with the powdered sugar. If your frosting becomes too thick, add a little extra heavy cream—just a teaspoon at a time—until you reach the desired spreadable texture.

I recommend using high-quality vanilla extract and fresh vanilla beans for the best flavor. Scraping the seeds from a vanilla bean adds delightful flecks, enhancing both the appearance and the aromatic profile of the frosting. Remember to mix thoroughly until the frosting is fluffy and glossy, which usually takes 2-3 minutes on medium speed.

Ingredients

Gather these simple ingredients before you begin:

For the Cake:

1 cup all-purpose flour
1 cup granulated sugar
1/2 cup unsweetened cocoa powder
1 tsp baking powder
1/2 tsp baking soda
1/4 tsp salt
1/2 cup buttermilk
1/4 cup vegetable oil
1 large egg
1 tsp vanilla extract
1/2 cup boiling water

For the Frosting:

1/2 cup unsalted butter, softened
2 cups powdered sugar
1/4 cup heavy cream
1 tsp vanilla extract
1/2 vanilla bean, seeds scraped

Make sure to follow the steps carefully for the best results!

Instructions

Follow these steps to create your Mini Heart Cake with Vanilla Bean Frosting:

Preheat the oven

Preheat your oven to 350°F (175°C) and grease your heart-shaped cake pans.

Make the cake batter

In a large mixing bowl, combine the flour, sugar, cocoa powder, baking powder, baking soda, and salt. Add the buttermilk, vegetable oil, egg, and vanilla extract, and mix until smooth. Gradually add the boiling water until well combined.

Bake the cake

Pour the batter into the prepared pans and bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean. Allow the cakes to cool in the pans for 10 minutes before transferring them to a wire rack to cool completely.

Make the frosting

In another bowl, beat the softened butter until creamy. Gradually add the powdered sugar and beat well. Add the heavy cream, vanilla extract, and the scraped seeds from the vanilla bean, mixing until smooth and fluffy.

Frost the cake

Once the cakes are completely cooled, place one cake layer on a plate and spread a layer of frosting on top. Place the second cake on top and frost the entire cake with the remaining frosting. Decorate as desired.

Enjoy your delightful Mini Heart Cake!

Pro Tips

For a decorative touch, consider adding fresh berries or sprinkles on top of the frosting.

Storing and Serving Tips

After frosting your Mini Heart Cake, if you have any cake leftovers, store them in an airtight container at room temperature for up to three days. If your kitchen is warm, consider refrigerating it to maintain the frosting's integrity. For longer storage, you can freeze the unfrosted cake layers individually wrapped in plastic wrap and aluminum foil for up to three months.

When ready to serve, let the frozen cake thaw in the refrigerator overnight. Frost only after it's completely cooled to prevent melting. This cake is delightful on its own but can also be served with fresh berries or a scoop of vanilla ice cream for added indulgence.

Variation Ideas

For a fun twist on the classic flavors, consider adding different extracts or citrus zest to the batter, like orange or almond extract, to create a unique taste profile. You can also fold in mini chocolate chips or crushed nuts for added texture, diversifying the cake further.

If you want to introduce a layer of flavor, try incorporating a fruit jam or a chocolate ganache between the cake layers. This not only adds visual interest but also brings wonderful surprises with each slice. Just make sure the jam is not too runny to prevent it from making the cake soggy.

Questions About Recipes

→ Can I use a different type of frosting?

Absolutely! You can use cream cheese frosting or a classic buttercream if you prefer.

→ How do I store leftover cake?

Store any leftover cake in an airtight container at room temperature for up to 3 days or in the fridge for up to a week.

→ Can I make this cake in advance?

Yes! You can bake the cake layers a day ahead and frost it just before serving for the best texture.

→ Is it possible to make mini heart cakes?

Yes! You can use a mini heart-shaped cake pan to create individual servings.