Baking Matilda's Chocolate Cake brings back sweet memories of my childhood. I remember standing on a stool, eagerly mixing the ingredients with my mom as the rich aroma filled our cozy kitchen. The joy it brought us each time we sliced into that moist chocolate cake was priceless.

This cake is perfect for any occasion, whether you're celebrating a birthday or simply indulging in a weekend treat. The velvety layers and luscious frosting make it a crowd pleaser. Plus, you'll find that it's surprisingly easy to make. Get ready to share the love with this delightful chocolate cake recipe!
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Why You’ll Love This Recipe
- Deliciously Rich Flavor: The combination of dark chocolate and cocoa powder creates a deep, indulgent flavor profile that's impossible to resist.
- Moist and Tender Layers: The addition of buttermilk and hot water ensures that each cake layer comes out perfectly moist every time.
- Easy to Make: This recipe is straightforward and doesn't require any fancy techniques, making it perfect for bakers of all skill levels.
- Crowd-Pleasing Frosting: The chocolate sour cream frosting adds a creamy, rich layer that elevates the cake to a whole new level.
- Perfect for Any Occasion: Whether it’s a casual gathering or a special celebration, this cake will impress your family and friends.
Ingredients You'll Need
- Cocoa powder – ¾ cup (65 grams). Provides the rich chocolate flavor.
- Granulated sugar – 1 ¾ cups (350 grams). Adds sweetness and helps with moisture.
- Vanilla extract – ¾ teaspoon. Enhances and rounds out the cake's flavor.
- Kosher salt – ¾ teaspoon. Balances the sweetness and enhances the flavors.
- Eggs – 2, room temperature. Binds the ingredients and adds richness.
- All-purpose flour – 2 cups (220 grams). Provides the structure for the cake.
- Baking soda – 2 teaspoons. Helps the cake rise and become fluffy.
- Baking powder – 1 teaspoon. Works alongside baking soda to create the right texture.
- Buttermilk – 1 cup (240 ml), room temperature. Ensures the cake is moist and tender.
- Vegetable oil – ½ cup (120 ml). Keeps the cake moist and adds a smooth texture.
- Very hot water – 1 cup (240 ml). Helps dissolve the cocoa and creates a smooth batter.
- Unsalted butter – 1 cup (220 grams), room temperature. Adds richness and flavor to the frosting.
- Kosher salt – ½ teaspoon. Enhances the flavors in the frosting.
- Confectioners' sugar – 2 cups (226 grams). Sweetens and thickens the frosting.
- Cocoa powder – 1 cup (84 grams). Adds richness to the frosting.
- Sour cream – ½ cup (120 ml), room temperature. Ensures a creamy, smooth frosting.
- Dark chocolate – 6 oz (170 grams), chopped. Forms the base of the decadent chocolate frosting.
How to Make Matilda's Chocolate Cake
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Grease two 8-inch cake pans and line the bottoms with parchment paper to prevent sticking.
Step 2: Mix Dry Ingredients
In a large bowl, whisk together the flour, cocoa powder, granulated sugar, baking powder, baking soda, and kosher salt. Ensure that the dry ingredients are evenly combined for a consistent cake.
Step 3: Combine Wet Ingredients
In a separate jug, whisk together the buttermilk, vegetable oil, eggs, and vanilla extract. This mixture should be smooth and well-blended before adding to the dry ingredients.
Step 4: Combine Batter
Gradually mix the wet ingredients into the dry ingredients until just combined. Slowly add the very hot water and stir until the batter is smooth and free of lumps.
Step 5: Bake the Cake
Pour the batter evenly into the prepared pans. Bake for 35 to 40 minutes, or until a toothpick inserted in the center comes out clean.
Step 6: Cool the Cakes
Allow the cakes to cool in the pans for about 10 minutes. Then, gently remove them from the pans and let them cool completely on a wire rack.
Step 7: Prepare the Frosting
To make the frosting, melt the chopped dark chocolate in the microwave, stirring frequently until smooth. Set aside to cool slightly before mixing.
Step 8: Whip the Butter
In a stand mixer, beat the unsalted butter and confectioners' sugar together until fully combined. Gradually increase the speed to high until the mixture is fluffy and light.
Step 9: Mix in Chocolate
Add the cocoa powder to the butter mixture and combine. Then add in the melted chocolate, sour cream, and kosher salt. Mix until all ingredients are well integrated and creamy.
Step 10: Frost and Serve
Frost the cooled cake layers generously with the chocolate sour cream frosting. Slice and serve to share the delightful flavors with everyone.

Pro Tips from My Kitchen
✓ Use Room Temperature Ingredients – Ensure your eggs and buttermilk are at room temperature. This helps create a smooth batter and ensures even baking.
✓ Sift the Dry Ingredients – Sifting the cocoa powder, flour, and dry ingredients helps remove lumps and ensures an even texture in your cake.
✓ Check for Doneness – Use a toothpick to check for doneness; it should come out clean or with a few moist crumbs for perfect moisture.
✓ Customize Your Frosting – Feel free to adjust the sweetness or cocoa level in your frosting to suit your taste. Adding a touch of espresso powder can enhance the chocolate flavor.
✓ Experiment with Layers – If you're feeling adventurous, you can add layers of fruit or different flavors between the cake layers to create a unique twist on the classic.
Frequently Asked Questions About Matilda's Chocolate Cake
Yes, you can use regular milk, but the cake may not be quite as moist. If using regular milk, add a tablespoon of vinegar or lemon juice to mimic buttermilk's acidity.
Insert a toothpick into the center of the cake. If it comes out clean or with a few moist crumbs, the cake is done. Avoid opening the oven too early as it can affect baking time.
Absolutely. You can bake the cakes a day ahead and store them wrapped in plastic wrap in the fridge. Frost them on the day of serving for the best texture.
This could happen if the batter was overmixed or if the cake was removed from the oven too soon. Always stick to the baking time and avoid mixing after adding wet ingredients.
This cake pairs beautifully with a scoop of vanilla ice cream or fresh berries. A dollop of whipped cream on top also adds a nice touch!

Matilda's Chocolate Cake Recipe
Ingredients
For the Cake
- ¾ cup Cocoa powder
- 1 ¾ cups Granulated sugar
- ¾ teaspoon Vanilla extract
- ¾ teaspoon Kosher salt
- 2 pieces Eggs, room temperature
- 2 cups All-purpose flour
- 2 teaspoons Baking soda
- 1 teaspoon Baking powder
- 1 cup Buttermilk, room temperature
- ½ cup Vegetable oil
- 1 cup Very hot water
For the Chocolate Sour Cream Frosting
- 1 cup Unsalted butter, room temperature
- ½ teaspoon Kosher salt
- 2 cups Confectioners' sugar
- 1 cup Cocoa powder
- ½ cup Sour cream, room temperature
- 6 oz Dark chocolate, chopped
Instructions
Preparation
- Preheat your oven to 350°F (175°C). Grease two 8-inch cake pans and line the bottoms with parchment paper to prevent sticking.
- In a large bowl, whisk together the flour, cocoa powder, granulated sugar, baking powder, baking soda, and kosher salt.
- In a separate jug, whisk together the buttermilk, vegetable oil, eggs, and vanilla extract.
- Gradually mix the wet ingredients into the dry ingredients until just combined.
- Slowly add the very hot water and stir until the batter is smooth and free of lumps.
Baking
- Pour the batter evenly into the prepared pans.
- Bake for 35 to 40 minutes, or until a toothpick inserted in the center comes out clean.
- Allow the cakes to cool in the pans for about 10 minutes. Then, gently remove them from the pans and let them cool completely on a wire rack.
Preparing the Frosting
- Melt the chopped dark chocolate in the microwave, stirring frequently until smooth. Set aside to cool slightly before mixing.
- In a stand mixer, beat the unsalted butter and confectioners' sugar together until fully combined.
- Gradually increase the speed to high until the mixture is fluffy and light.
- Add the cocoa powder to the butter mixture and combine.
- Then add in the melted chocolate, sour cream, and kosher salt. Mix until all ingredients are well integrated and creamy.
Serving
- Frost the cooled cake layers generously with the chocolate sour cream frosting.
- Slice and serve to share the delightful flavors with everyone.
Notes
- Use room temperature ingredients for best results.
- Sifting the dry ingredients helps to ensure an even texture.
- Customize your frosting sweetness or flavor as desired.





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