This decadent coffee chocolate cake is everything a chocolate lover could want. The layers are incredibly moist, tender, and filled with deep chocolate flavor, while coffee and espresso powder make the cocoa taste even richer. Finished with creamy chocolate buttercream, it is perfect for birthdays, celebrations, or whenever you are craving a truly special dessert.
The secret to the rich flavor of this coffee chocolate cake is the combination of hot coffee and espresso powder, which makes the cocoa taste deeper and more intense. King Arthur Baking explains how espresso powder enhances chocolate flavor in cakes and other baked desserts.
If you enjoy preparing homemade cake layers, try my Moist Chocolate Sponge Cake next. It is soft, fluffy, and perfect for filling and decorating.
Quick Recipe Info
Prep Time: 20 minutes
Bake Time: 25 minutes
Cooling and Chilling Time: About 1 hour 15 minutes
Decorating Time: 20 minutes
Total Time: About 2 hours 20 minutes
Servings: 12 slices
Pan Size: Two 8-inch (20 cm) round cake pans
Oven Temperature: 350°F (175°C)
Difficulty: Moderate
Best For: Birthdays, celebrations, holidays, and special occasions
This coffee chocolate cake can be prepared ahead of time and chilled before serving, making it a convenient dessert for any celebration.
Why You’ll Love This Coffee Chocolate Cake
Deep chocolate flavor: Hot coffee and espresso powder intensify the cocoa and create a rich chocolate taste without making the cake overly bitter.
Incredibly moist layers: Buttermilk, oil, and hot coffee keep both cake layers soft, tender, and moist.
Creamy chocolate buttercream: The smooth homemade frosting adds the perfect amount of sweetness and makes every slice feel extra indulgent.
Simple preparation: The batter comes together easily in two bowls without any complicated baking techniques.
Perfect for celebrations: This beautiful coffee chocolate cake is ideal for birthdays, holidays, family gatherings, and other special occasions.
Ingredients You’ll Need
This coffee chocolate cake is made with simple baking ingredients that create moist, tender layers and a smooth chocolate buttercream.
For the Coffee Chocolate Cake
All-purpose flour: Gives the cake layers structure while keeping the crumb soft.
Unsweetened cocoa powder: Creates the rich chocolate flavor and dark color.
Espresso powder: Intensifies the cocoa without overpowering the cake.
Granulated sugar: Sweetens the cake and helps keep it moist.
Baking soda, baking powder, and salt: Help the layers rise evenly and balance the sweetness.
Vegetable oil: Keeps the cake moist and tender, even after refrigeration.
Eggs and vanilla extract: Add structure, richness, and warm vanilla flavor.
Buttermilk: Creates a soft texture and works with the baking soda to help the cake rise.
Hot strong coffee: Deepens the chocolate flavor and creates a smooth cake batter.
For the Chocolate Buttercream
Unsalted butter: Use softened butter so the frosting becomes light and creamy.
Powdered sugar: Sweetens and thickens the buttercream.
Unsweetened cocoa powder: Gives the frosting its rich chocolate flavor.
Heavy cream: Makes the buttercream smooth, fluffy, and easy to spread.
Vanilla extract and salt: Balance the sweetness and enhance the chocolate flavor.
Decorations: Finish the cake with sprinkles, chocolate chips, piped buttercream, or decorations of your choice.
How to Make Coffee Chocolate Cake
1. Prepare the Cake Pans
Preheat the oven to 350°F (175°C). Grease two 8-inch (20 cm) round cake pans with butter and line the bottoms with parchment paper. This will help the delicate cake layers release cleanly after baking.
2. Combine the Dry Ingredients
In a large mixing bowl, whisk together the all-purpose flour, cocoa powder, granulated sugar, baking soda, baking powder, salt, and espresso powder. Mix well to distribute the leavening ingredients evenly and break up any cocoa lumps.
3. Mix the Wet Ingredients
In a separate bowl, combine the oil, eggs, and vanilla extract. Beat with an electric mixer just until smooth. Add the buttermilk and hot strong coffee, then mix again until everything is evenly combined.
4. Make the Cake Batter
Gradually add the dry ingredients to the wet mixture. Mix on low speed only until the batter is smooth and no dry flour or large lumps remain. Avoid overmixing because this can make the cake layers dense. The batter will be fairly thin, which is normal for this recipe.
5. Divide the Batter
Pour the batter evenly between the two prepared cake pans. Gently tap the pans against the counter to release any large air bubbles and help the batter settle evenly.
6. Bake and Cool
Bake for approximately 25 minutes. Insert a toothpick into the center of each layer to check for doneness. It should come out clean or with a few moist crumbs attached.
Allow the cakes to cool in the pans for about 10 to 15 minutes. Carefully remove them from the pans and transfer them to a wire rack. Let both layers cool completely before adding the buttercream.
7. Make the Chocolate Buttercream
Place the softened butter in a large bowl and beat with an electric mixer until pale, light, and fluffy. Gradually add the powdered sugar and cocoa powder, mixing on low speed at first.
Add the vanilla extract, salt, and heavy cream. Continue beating until the chocolate buttercream is smooth, creamy, and easy to spread. Add the heavy cream gradually until the frosting reaches your preferred consistency.
8. Fill and Stack the Cake
If the cake layers have domed tops, carefully trim them with a serrated knife so they are flat and even. Place the first layer on a serving plate and spread a generous, even layer of chocolate buttercream over the top.
Place the second cake layer on top and gently press it into place. Refrigerate the filled cake for about 15 minutes to help the layers become firm and stable.
9. Frost and Decorate
Cover the top and sides of the chilled coffee chocolate cake with the remaining buttercream. Smooth the frosting or create a textured finish, then decorate with piped buttercream, chocolate chips, sprinkles, or decorations of your choice. Slice, serve, and enjoy!
How to Store and Freeze
At room temperature: Keep the coffee chocolate cake covered in a cake container for up to 1 day if the room is cool. If your kitchen is warm, store it in the refrigerator so the buttercream stays firm.
In the refrigerator: Place the cake in an airtight container or cover it carefully and refrigerate for up to 4 to 5 days. Let individual slices sit at room temperature for about 30 minutes before serving so the cake and buttercream can soften.
Freeze the cake layers: Wrap each completely cooled, unfrosted layer tightly in two layers of plastic wrap, followed by aluminum foil. Freeze for up to 2 months.
Freeze the finished cake: Chill the frosted cake until the buttercream becomes firm. Wrap the whole cake or individual slices tightly and place them in a freezer-safe container for up to 2 months.
Thaw and serve: Thaw the wrapped cake overnight in the refrigerator. Bring it to room temperature before serving for the softest texture and richest chocolate flavor.
Frequently Asked Questions (FAQ)
Does coffee chocolate cake taste strongly like coffee?
The cake has a subtle coffee flavor, but chocolate remains the dominant taste. Hot coffee and espresso powder mainly deepen the cocoa and make the chocolate flavor richer.
Can I use decaf coffee?
Yes. Strong decaf coffee works perfectly and will still enhance the chocolate flavor without adding extra caffeine.
Can I make this cake without espresso powder?
Yes, you can leave it out if necessary. The coffee chocolate cake will still be delicious, but its chocolate flavor may not taste quite as deep and intense.
What can I use instead of buttermilk?
Add 1 tablespoon of lemon juice or white vinegar to a measuring cup, then add enough milk to make 1 cup. Stir and let it stand for 5 to 10 minutes before using.
Why is my cake batter so thin?
A thin batter is normal for this recipe because it contains hot coffee, buttermilk, and oil. Do not add extra flour because this could make the baked cake dry and dense.
Can I use different-sized cake pans?
Yes. Two 9-inch round pans will create slightly thinner layers that may bake faster, so begin checking them after about 20 minutes. For the best results and thick, moist layers, use two 8-inch pans.
Can I prepare the cake ahead of time?
Yes. Bake and cool the layers one day in advance, then wrap each one tightly in plastic wrap. Store them at room temperature overnight or refrigerate them before filling and decorating.
How can I adjust the buttercream consistency?
If the buttercream is too thick, add heavy cream one tablespoon at a time. If it is too soft, add a little more powdered sugar or cocoa powder and mix until it becomes smooth and spreadable.
Nutrition per Serving
The following values are approximate and based on 12 equal slices of coffee chocolate cake without additional decorations.
Calories: 640 kcal
Carbohydrates: 86 g
Protein: 6 g
Fat: 33 g
Saturated Fat: 15 g
Cholesterol: 90 mg
Sodium: 520 mg
Fiber: 4 g
Sugar: 66 g
Nutritional values may vary depending on the brands of ingredients, the amount of heavy cream used, and the final decorations.
Conclusion
This decadent coffee chocolate cake combines incredibly moist cocoa layers, deep coffee flavor, and creamy chocolate buttercream in every slice. Hot coffee and espresso powder intensify the chocolate, while buttermilk keeps the cake soft and tender.
Although the finished cake looks impressive, the simple preparation makes it manageable for home bakers. Serve it for birthdays, holidays, family gatherings, or whenever you want a rich homemade dessert that feels truly special.
I hope you enjoy every delicious bite. Happy baking!
Decadent Coffee Chocolate Cake
Ingredients
Equipment
Method
- Prepare the oven and pans: Preheat the oven to 350°F (175°C). Grease two 8-inch (20 cm) round cake pans and line the bottoms with parchment paper.
- Combine the dry ingredients: In a large bowl, whisk together the flour, espresso powder, cocoa powder, sugar, baking soda, baking powder, and salt.
- Mix the wet ingredients: In a separate bowl, combine the oil, eggs, and vanilla extract. Beat just until smooth and evenly combined.
- Add the buttermilk and coffee: Pour in the buttermilk and hot strong coffee. Mix until combined.
- Make the batter: Gradually add the dry ingredients to the wet mixture. Mix on low speed only until the batter is smooth and no large lumps remain. Do not overmix. The batter will be thin.
- Divide and bake: Pour the batter evenly between the prepared pans. Bake for approximately 25 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
- Cool completely: Leave the cakes in the pans for 10 to 15 minutes. Carefully remove them and transfer them to a wire rack to cool completely.
- Beat the butter: Place the softened butter in a large mixing bowl and beat for 3 to 4 minutes, or until pale, light, and fluffy.
- Add the remaining ingredients: Gradually add the powdered sugar and cocoa powder, mixing on low speed. Add the vanilla extract, salt, and 3 tablespoons of heavy cream.
- Whip until creamy: Beat until the buttercream is smooth and fluffy. Add more heavy cream, one tablespoon at a time, until it reaches a soft and spreadable consistency.
- Level the layers: If needed, trim the domed tops of the completely cooled cake layers with a serrated knife.
- Fill the cake: Place the first layer on a serving plate. Spread a generous, even layer of chocolate buttercream over the top, then place the second layer on top.
- Chill: Refrigerate the filled cake for approximately 15 minutes to help the layers become firm and stable.
- Frost and decorate: Cover the top and sides with the remaining chocolate buttercream. Decorate as desired, then slice and serve.
Notes
- Use freshly brewed hot coffee for the deepest chocolate flavor.
- The cake batter is naturally thin, so do not add extra flour.
- Mix only until the ingredients are combined to keep the layers soft.
- Allow the cake layers to cool completely before adding buttercream.
- Add heavy cream to the buttercream gradually because you may not need the full amount.
- Refrigerate the finished cake, but let each slice stand at room temperature for about 30 minutes before serving.
- Additional decorations are not included in the nutritional calculation.