8 Inch Chocolate Cake Recipe
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If you’re a chocolate lover looking for the ultimate showstopper, this 8 Inch Chocolate Cake is the one to bake. Rich, moist layers of deep cocoa flavor come together with a luscious chocolate buttercream that’s smooth and velvety, making every bite pure bliss. It’s the kind of cake that feels like a warm hug, perfect for celebrations or just because you deserve a slice of joy. Trust me, once you try this 8 Inch Chocolate Cake, it will become your new favorite go-to recipe for impressing friends and family.

Ingredients You’ll Need
These ingredients might sound straightforward, but each one plays a vital role in building the texture, flavor, and color that make this cake so extraordinary. From the richness of butter to the tang of sour cream, everything combines for perfection.
- 270 grams all-purpose flour, spooned and leveled: The backbone that gives structure to the cake without weighing it down.
- 60 grams unsweetened cocoa powder, spooned and leveled: I use dutch-processed for a smoother, richer chocolate taste and darker color.
- 1 Tbsp baking powder: Helps your cake rise beautifully, giving those soft, fluffy layers.
- 1 tsp fine sea salt: Enhances the chocolate flavor and balances the sweetness perfectly.
- 113 grams unsalted butter, room temperature: Adds richness and tenderness to the crumb.
- 400 grams granulated sugar: Sweetens the cake while helping to create a tender texture.
- 120 mL canola oil or any neutral oil: Keeps the cake moist for days without overpowering the chocolate.
- 4 large eggs, room temperature: The glue that brings everything together, adding richness and structure.
- 227 grams sour cream, room temperature: Adds a slight tang and extra moisture for a velvety texture.
- 2 tsp vanilla extract: Rounds out the chocolate flavor with warm, sweet notes.
- 240 mL milk, room temperature: Helps thin the batter just enough to create a silky crumb.
- 400 grams granulated sugar (for buttercream): Creates the perfect level of sweetness in the frosting.
- 120 mL water (for buttercream): Used to make a sugar syrup for a light, fluffy buttercream.
- 4 large eggs, room temperature (for buttercream): Whipped to create a dreamy meringue base for the frosting.
- 454 grams unsalted butter, room temperature (for buttercream): Provides the creamy richness you crave in a chocolate buttercream.
- 80 grams unsweetened cocoa powder, spooned and leveled (for buttercream): Gives the frosting an intense chocolate punch.
- 1 Tbsp vanilla extract (for buttercream): Adds depth and warmth to the buttercream flavor.
- 1/8 tsp fine sea salt (for buttercream): Balances the sweetness and enhances the chocolate taste.
How to Make 8 Inch Chocolate Cake
Step 1: Prepare Your Pans and Preheat
Start by preheating your oven to 350°F (177°C) with convection if possible. Grease three 8 inch cake pans thoroughly and line them with parchment paper. This step ensures your cake layers will release easily without sticking, keeping those beautiful edges intact.
Step 2: Mix Dry Ingredients
In a medium bowl, whisk together the flour, cocoa powder, baking powder, and salt until everything is evenly combined. Taking the time here means your cake will have a consistent chocolate flavor and perfect rise.
Step 3: Cream Butter, Sugar, and Oil
In a large bowl or stand mixer, beat the softened butter with sugar at full speed for 1-2 minutes until light and fluffy. Then add the neutral oil and beat for another 1-2 minutes. This combination adds moisture and richness, ensuring your cake stays tender.
Step 4: Add Eggs
Add the eggs one at a time, beating well after each addition for at least 30 seconds. This gradual incorporation builds the cake’s structure and prevents any eggy smell in your batter.
Step 5: Incorporate Sour Cream and Vanilla
Add in the sour cream and vanilla extract, mixing just until combined. The sour cream brings a slight tanginess that brightens the chocolate without overwhelming it.
Step 6: Combine Flour and Milk Mixtures
Add half of the dry ingredients, then turn your mixer to low and slowly stream in the room temperature milk. Add the remaining dry ingredients and increase speed to medium, mixing until just a few streaks of flour remain. This careful folding keeps the batter light.
Step 7: Scrape & Distribute Batter
Use a rubber spatula to scrape down the bowl’s sides and bottom, mixing once more by hand for uniformity. Divide the batter evenly among your prepared pans—about 18 to 19 ounces each—so they bake evenly.
Step 8: Bake
Bake for 30 to 35 minutes or until the edges pull away from the pan and a gentle press on the center springs back. Overbaking can dry the cake, so keep an eye on it close to the end of baking.
Step 9: Cool
Remove the cakes from the oven and flip them gently onto tea towels or wire racks to cool completely. Cooling fully before frosting helps ensure your buttercream won’t melt or slide off.
Step 10: Make Chocolate Buttercream
In a saucepan, combine sugar and water, swirling to dissolve the sugar. Heat gently until it reaches 240°F (116°C) on a candy thermometer. While this cooks, whip the eggs at high speed until foamy. Drizzle the hot sugar syrup into the eggs slowly with the mixer on medium speed, then whip on high for 5-10 minutes until cool and fluffy.
Step 11: Add Butter and Cocoa
Reduce the mixer speed to medium and add butter in small chunks, letting each chunk blend fully to create a silky, creamy buttercream. Scrape the bowl and then whip in cocoa powder, vanilla, and a pinch of salt until fluffy and well incorporated.
Step 12: Assemble Your 8 Inch Chocolate Cake
Place the first cake layer on your serving plate and spread a quarter of the buttercream evenly on top. Repeat with layers two and three. Apply a thin crumb coat all around to seal in crumbs, then refrigerate for 30 minutes. Finish frosting the outside with the remaining buttercream, creating swirls and waves with an offset spatula for a stunning look.
How to Serve 8 Inch Chocolate Cake

Garnishes
Top your 8 Inch Chocolate Cake with fresh berries like raspberries or strawberries for a tangy contrast, or sprinkle with chocolate shavings or toasted nuts for texture and elegance. A dusting of powdered sugar or edible gold flakes takes it up a level, perfect for special occasions.
Side Dishes
Serve slices alongside a scoop of vanilla bean ice cream or a dollop of softly whipped cream to balance out the richness. Fresh fruit salad or a bright citrus coulis can also complement the chocolate beautifully without overpowering it.
Creative Ways to Present
For a wow factor, try layering the cake with fresh fruit or even a surprise filling like salted caramel or chocolate ganache between the layers. Wrap a ribbon around the cake for a classic look, or pipe decorative borders for a bakery-worthy finish. It’s your canvas—let it shine!
Make Ahead and Storage
Storing Leftovers
Once frosted, keep the 8 Inch Chocolate Cake covered and stored in the refrigerator to maintain freshness. It will stay moist and delicious for up to 4 days. Bringing slices to room temperature before serving helps the flavors bloom.
Freezing
You can freeze the assembled cake by wrapping it tightly in plastic wrap and then in aluminum foil to prevent freezer burn. Freeze for up to 3 months. Thaw it in the refrigerator overnight before enjoying to preserve its tender crumb and creamy icing.
Reheating
If you prefer your cake slightly warm, let a slice sit at room temperature for an hour, or warm gently in the microwave for 10-15 seconds. Avoid overdoing it, so the buttercream stays intact and delectably smooth.
FAQs
Can I use regular cocoa powder instead of dutch-processed?
Absolutely! Regular cocoa powder will work fine but expect a slightly more acidic taste and a lighter color. The texture and moistness of the cake won’t be affected.
Is it okay to use different oils instead of canola?
Yes, neutral oils like vegetable or light olive oil work perfectly here. Avoid strong-flavored oils so you don’t overpower the chocolate.
Can I make this cake gluten-free?
To make the 8 Inch Chocolate Cake gluten-free, substitute the all-purpose flour with a 1-to-1 gluten-free baking flour blend. Be sure it contains xanthan gum for structure.
Why do I need to use room temperature ingredients?
Room temperature ingredients blend better, helping achieve a smooth batter and uniform crumb. Cold eggs or butter can cause your batter to curdle or not mix evenly.
How do I know when the cake is done baking?
The cake is ready when the edges pull away from the pan and the center springs back gently when pressed. A toothpick inserted in the middle should come out with just a few moist crumbs.
Final Thoughts
There you have it — a showstopping, incredibly moist, and deeply chocolatey 8 Inch Chocolate Cake recipe that’s sure to become a household favorite. Baking this cake is a joyful experience that rewards you with layers of lusciousness and a buttercream frosting that feels like a dream. Whether for a birthday, holiday, or just because, there’s no better way to celebrate life’s sweetest moments. Grab your ingredients, preheat that oven, and treat yourself to this delicious chocolate delight today!
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Print8 Inch Chocolate Cake Recipe
A rich and moist 8-inch chocolate cake layered with smooth and creamy chocolate buttercream, perfect for chocolate lovers seeking a classic homemade dessert with intense cocoa flavor.
- Prep Time: 25 minutes
- Cook Time: 35 minutes
- Total Time: 1 hour
- Yield: 12 servings 1x
- Category: Layer Cakes
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
Chocolate Cake
- 270 grams all-purpose flour, spooned and leveled
- 60 grams unsweetened cocoa powder, spooned and leveled (Dutch-processed recommended)
- 1 Tbsp baking powder
- 1 tsp fine sea salt
- 113 grams unsalted butter, room temperature
- 400 grams granulated sugar
- 120 mL canola oil or any neutral oil
- 4 large eggs, room temperature
- 227 grams sour cream, room temperature
- 2 tsp vanilla extract
- 240 mL milk, room temperature
Chocolate Buttercream
- 400 grams granulated sugar
- 120 mL water
- 4 large eggs, room temperature
- 454 grams unsalted butter, room temperature
- 80 grams unsweetened cocoa powder, spooned and leveled
- 1 Tbsp vanilla extract
- 1/8 tsp fine sea salt
Instructions
- Prepare Cake Pans and Oven: Preheat the oven to 350°F (177°C) convection. Grease and line three 8-inch round cake pans with baking spray and parchment paper to ensure easy cake removal.
- Mix Dry Ingredients: In a medium bowl, whisk together the all-purpose flour, cocoa powder, baking powder, and fine sea salt until evenly combined.
- Cream Butter and Sugars: In a large bowl or stand mixer, beat the unsalted butter and granulated sugar on full speed for 1-2 minutes until light and fluffy. Add the canola oil and continue beating for another 1-2 minutes.
- Add Eggs: Add eggs one at a time, beating for at least 30 seconds between each addition to fully incorporate them into the batter.
- Incorporate Sour Cream and Vanilla: Mix in the sour cream and vanilla extract just until combined to add moisture and flavor.
- Add Dry Ingredients and Milk: Add half of the flour mixture to the batter on low speed, then slowly stream in the room temperature milk. Add the remaining flour mixture and beat on medium speed for 30-60 seconds until nearly combined with only a few streaks of flour remaining.
- Final Mix: Use a rubber spatula to scrape the sides and bottom of the bowl and fold the batter by hand once more to ensure thorough mixing.
- Divide Batter and Bake: Evenly distribute about 18-19 oz of batter into each prepared pan. Bake for 30-35 minutes or until the edges release from the pan and the center springs back upon gentle touch.
- Cool Cakes: Flip the cakes onto a tea towel or cooling rack and allow them to cool completely to room temperature before frosting.
- Prepare Sugar Syrup for Buttercream: In a medium saucepan, combine granulated sugar and water. Swirl to dissolve sugar and heat over medium until the sugar dissolves and mixture simmers. Reduce heat to low, cover, and simmer for a couple of minutes.
- Whip Eggs: While sugar is cooking, place eggs in a stand mixer bowl fitted with a whisk attachment and whip on high speed.
- Cook Sugar Syrup to Soft Ball Stage: Using a candy thermometer, cook sugar syrup until it reaches 240°F (116°C). Slowly drizzle the hot syrup into the whipping eggs on medium speed.
- Whip Egg Mixture: Increase mixer speed to high and whip for 5-10 minutes, until the mixture is pale, fluffy, and cool to the touch.
- Add Butter: Reduce speed to medium and add unsalted butter 2 tablespoons at a time. Mix thoroughly until the buttercream is smooth and creamy.
- Add Cocoa and Flavorings: Scrape the bowl sides, then add cocoa powder, vanilla extract, and salt. Whip on high for 1-2 minutes to combine fully.
- Assemble the Cake: Place the first cake layer on a flat surface and frost with one quarter of the buttercream. Repeat for the second layer, then place the third layer on top.
- Apply Crumb Coat: Apply a thin layer of buttercream around the sides and top of the cake. Refrigerate for 30 minutes to set the crumb coat.
- Final Frosting: Use the remaining buttercream to frost the exterior of the cake. Decorate with swirls using an offset spatula or spoon as desired.
Notes
- Use room temperature ingredients for best results to ensure even mixing and smooth batter.
- To check doneness, insert a toothpick into the center; it should come out with a few moist crumbs but not wet batter.
- Buttercream should be smooth and spreadable; if it appears curdled, continue mixing until creamy.
- Store the frosted cake in the refrigerator for up to 3 days, bring to room temperature before serving.
- This recipe uses Dutch-processed cocoa powder for a deeper chocolate flavor, but natural cocoa can be substituted with slight adjustments.
Nutrition
- Serving Size: 1 slice (1/12 of cake)
- Calories: 612 kcal
- Sugar: 52 g
- Sodium: 295 mg
- Fat: 36 g
- Saturated Fat: 20 g
- Unsaturated Fat: 13 g
- Trans Fat: 0.2 g
- Carbohydrates: 68 g
- Fiber: 1 g
- Protein: 7 g
- Cholesterol: 179 mg
Keywords: 8 inch cake, 8 inch chocolate cake, chocolate buttercream, chocolate cake

