Chocolate Sour Cream Cake with Fudge Frosting
This cake is everything I love about chocolate, wrapped into one. The cake itself is soft and deeply chocolatey, thanks to a mix of cocoa powder, dark brown sugar, and a little bit of coffee to bring out that bold flavor. And the frosting? It’s glossy, silky, and the kind of thing you’ll want to eat straight from the spoon (which I fully support). The balance of bittersweet and semi-sweet chocolate keeps it from being cloying, making each bite just as good as the first.
The best part? It’s actually really simple to make. You don’t need any special skills, just a few bowls, a whisk, and enough patience to let the cakes cool before frosting (I know, I know, but trust me). If you’ve ever been intimidated by layer cakes, this is a great one to start with. It’s forgiving, it comes together quickly, and if your frosting isn’t perfectly smooth, who cares? More texture just means more character.
And since Valentine’s Day is practically an excuse to eat as much chocolate as possible, I can’t think of a better time to make it. Whether you’re baking for someone special or just yourself, this cake is the way to go. Happy Baking!
With love,
Your Baker, Hannah
Here’s Everything You’re Gonna Need!
- All-purpose flour
- Granulated sugar
- Dark brown sugar
- Baking soda
- Baking powder
- Salt
- Eggs
- Vanilla extract
- Melted butter
- Sour cream
- Buttermilk
- Cocoa powder
- Instant coffee
- Boiling water
- Butter (for frosting)
- Bittersweet chocolate chips
- Heavy cream
- Powdered sugar
Ingredient Substitutions:
Sour Cream: Full-fat Greek yogurt works well as a substitute.
Buttermilk: Use a mix of whole milk and a tablespoon of lemon juice or vinegar if you don’t have buttermilk.
Instant Coffee: Espresso powder or very strong brewed coffee can enhance the chocolate flavor if instant coffee is unavailable.
Bittersweet Chocolate: Semi-sweet chocolate can be used for a slightly sweeter frosting.
How to Bake Chocolate Sour Cream Cake:
Step 1: Preheat your oven to 350°F and line two 9-inch cake pans with parchment paper. Grease the sides if needed. In a large bowl, whisk together flour, sugar, baking soda, baking powder, and salt.
Step 2: In another bowl, whisk together eggs, vanilla, sour cream, buttermilk, and melted butter until smooth. In a small bowl, mix cocoa powder and instant coffee with boiling water to create a thick, smooth mixture.
Step 3: Stir the wet ingredients into the dry ingredients, then gently fold in the cocoa mixture until fully incorporated.
Step 4: Divide the batter evenly between the prepared pans and bake for 22-25 minutes, or until a toothpick inserted in the center comes out clean. Let the cakes cool in their pans for 10 minutes before transferring them to a wire rack to cool completely.
Step 5: Melt butter and chocolate chips together, then mix in cocoa powder, heavy cream, and powdered sugar until smooth and fluffy. Once the cakes are cool, place one layer on a cake plate, frost the top, add the second layer, and frost the top and sides.
Wanna watch the assembly?
Click here for a short snippet of this Chocolate Sour Cream Cake in the making!
Chocolate Sour Cream Cake Recipe:
Chocolate Sour Cream Cake with Dark Chocolate Frosting
Equipment
- Mixing Bowls
- Whisk
- Electric Hand Mixer
- Measuring Cups
- Measuring Spoons
- Cooling Rack
- Offset Spatula or Butterknife
Ingredients
Sour Cream Chocolate Cake:
- 2 cups All Purpose Flour
- 1 cup Granulated Sugar
- 2/3 cups Dark Brown Sugar
- 1 1/2 tsp Baking Soda
- 1 1/2 tsp Baking Powder
- 1 tsp Salt
- 3 Large Eggs
- 2 tsp Vanilla Extract
- 2/3 cups Melted Butter
- 1/2 cup Sour Cream
- 3/4 cup Buttermilk
- 3/4 cup Cocoa Powder
- 1 TBSP Instant Coffee
- 3/4 cup Boiling Water
Dark Chocolate Frosting:
- 1 cup Butter
- 10 oz. Bittersweet Chocolate Chips
- 1 cup Cocoa Powder
- 5 cups Powdered Sugar
- 1 cup Heavy Cream
How to Make Sure Your Cake Stays Moist When Baking:
- Use room temperature ingredients to ensure even mixing.
- Measure ingredients carefully, especially flour, which can dry out the batter if over-measured.
- Don’t overbake! Check your cake a few minutes before the timer goes off to prevent dryness.
- Store properly by wrapping the cake in plastic wrap while it cools to lock in moisture.
Tips to Prevent Your Frosted Cake from Collapsing:
- Cool completely before frosting to avoid melting the frosting and causing layers to slide.
- Use a crumb coat (a thin layer of frosting) before the final coat to keep everything stable.
- Don’t overload with frosting between layers—too much can cause shifting.
How to Store Your Baked Cake:
- At Room Temperature: Keep the cake covered for up to 2 days.
- In the Refrigerator: Store in an airtight container for up to 5 days; let it sit at room temperature before serving.
- In the Freezer: Wrap individual slices or the whole cake in plastic wrap and foil. Store for up to 3 months and thaw overnight in the fridge before serving.
