Name: Orange Chocolate Cake with Blood Orange Buttercream Recipe
Prep time: 30 min
Cook time: 35 min
Total time: 1 h 25 min
Cuisine: American
Ingredients: ⅔ cup all purpose flour; ½ cup cocoa powder; ⅔ teaspoon baking soda; ⅓ teaspoon baking powder; ½ teaspoon salt; ⅓ cup buttermilk; 2 tablespoons neutral oil (grapeseed, olive, or avocado oil); 1 large egg (room temperature); ⅔ cup brown sugar (packed); 3 tablespoons orange zest; ¼ cup dark chocolate (melted and cooled); ⅓ cup espresso (or coffee); 3 egg whites; 1 cup granulated sugar; 1⅓ cups unsalted butter (room temperature); ¼ cup cooled blood orange juice reduction (simmer ½ cup blood orange juice on medium low until ¼ cup remains); Zest of 2 blood oranges; Dried orange slices; Fresh organic & food safe flowers

If you adore that classic chocolate-orange combo, you’re in for a real treat with this Orange Chocolate Cake with Blood Orange Buttercream Recipe. It’s moist, chocolatey, and topped with a zingy citrus frosting that brightens every bite — trust me, it’s irresistible.

A single dark brown, round cake layer sits centered on a white marble plate with a smooth texture. On top of this cake layer, there is a thick, uneven spread of light cream-colored frosting, with visible swirls and soft peaks. The plate is placed on a white marbled surface, creating a clean and bright background. photo taken with an iphone --ar 2:3 --v 7

Jump to:

Why You'll Love This Recipe
Ingredients & Why They Work
Make It Your Way
Step-by-Step: How I Make Orange Chocolate Cake with Blood Orange Buttercream Recipe
Top Tip
How to Serve Orange Chocolate Cake with Blood Orange Buttercream Recipe
Make Ahead and Storage
Frequently Asked Questions:
Final Thoughts
Orange Chocolate Cake with Blood Orange Buttercream Recipe

Why You'll Love This Recipe

From the moment I baked this cake, it became an instant favorite in my kitchen. The rich chocolate base paired with the bright blood orange buttercream is a flavor combo that feels both classic and exciting — perfect for celebrations or just because.

Deeply Chocolatey: The cocoa and melted dark chocolate create a moist, rich cake that satisfies chocolate lovers.
Citrusy Brightness: Blood orange juice reduction in the buttercream offers an intense, fresh citrus zing that cuts through the richness.
Light & Tender Texture: Folding in stiff egg whites makes this cake wonderfully airy and soft.
Elegant Presentation: With dried orange slices and fresh edible flowers, it’s as pretty as it is delicious.

Ingredients & Why They Work

Before you get started, a quick note on ingredients — grabbing quality products will really make this dessert sing. Look for fresh blood oranges and good-quality cocoa powder for the best flavor.

Flat lay of a small bowl of all purpose flour, a small bowl of rich dark cocoa powder, a few grains of baking soda and baking powder scattered neatly, a small bowl of coarse salt, a small bowl of creamy buttermilk, a small bowl of golden neutral oil, one large whole egg with clean shell, a small bowl of packed brown sugar, a small pile of bright orange zest, a small white bowl with melted dark chocolate, a small white bowl with dark espresso, three whole uncracked egg whites, a small bowl of granulated sugar, a small mound of unsalted butter at room temperature, a small white bowl with deep red cooled blood orange juice reduction, two whole blood oranges with bright orange skin and fresh zest, a few dried orange slices arranged neatly, and a few fresh organic edible flowers—all arranged symmetrically on simple white ceramic bowls and plates placed on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p m7354615311229779997

All Purpose Flour: Provides structure while keeping the crumb tender.
Cocoa Powder: Use unsweetened for that rich deep chocolate flavor.
Baking Soda & Baking Powder: These leavening agents work together for a perfect rise.
Salt: Enhances all the flavors and balances sweetness.
Buttermilk: Adds moisture and a slight tang that complements the chocolate.
Neutral Oil (grapeseed, olive, or avocado): Keeps the cake moist without overpowering flavors.
Eggs (large & whites separate): Egg yolks enrich the batter, while whipped whites lighten the texture.
Brown Sugar: Adds depth and a subtle molasses note.
Orange Zest: Fresh zest packs in vibrant citrus aroma and flavor.
Dark Chocolate (melted): Intensifies the chocolate profile and adds silkiness.
Espresso or Coffee: Enhances chocolate flavor without tasting like coffee.
Granulated Sugar: Beaten into egg whites for volume and sweetness.
Unsalted Butter: A must for smooth, creamy buttercream.
Blood Orange Juice Reduction: The key to that tangy, concentrated citrus punch.
Blood Orange Zest: Adds bright, fresh bits of flavor in the frosting.
Dried Orange Slices & Fresh Food-Safe Flowers: Gorgeous natural garnish ideas that elevate the presentation.

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Note: You'll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Make It Your Way

One of the best things about this Orange Chocolate Cake with Blood Orange Buttercream Recipe is how wonderfully versatile it is. Whether you want to adjust it for dietary needs or explore new flavor twists, there’s room to make it truly your own.

Dairy-Free Delight: I’ve swapped the buttermilk for almond milk mixed with a touch of white vinegar and replaced the butter with a rich vegan butter. The result? A dairy-free version that’s just as luscious and keeps the cake incredibly moist.
Espresso Substitute: Some friends prefer to skip espresso altogether, so I’ve used strong brewed coffee instead. It still deepens the chocolate flavor beautifully without overpowering the citrus notes.
Seasonal Citrus Swap: If you can’t find blood oranges, fresh navel orange juice and zest work well too. Just simmer the juice down gently to get that concentrated flavor punch in the buttercream.
Extra Zesty Twist: Sometimes I like to add a teaspoon of orange blossom water to the buttercream for a captivating floral aroma that pairs perfectly with the chocolate cake.
Elegant Garnish Options: Beyond dried orange slices and edible flowers, candied ginger or toasted nuts add wonderful texture and a hint of extra warmth.

Step-by-Step: How I Make Orange Chocolate Cake with Blood Orange Buttercream Recipe

A slice of dark chocolate cake with a thick layer of light cream on top sits on a white plate with a white marbled background. The cream layer is smooth and even. On top of the cream, there are two thin, round slices of dried orange and blood orange, showing their detailed texture and vibrant colors. Next to the orange slices is a small sprig of greenery with tiny white flowers, adding a fresh touch. In the background, the rest of the cake is visible, also decorated with more orange slices and flowers. Photo taken with an iphone --ar 2:3 --v 7

Step 1: Preheat and Prep Your Pan

Start by preheating your oven to 350°F. This ensures it’s at the perfect temperature right when the batter’s ready to go in. Grease and flour an 8-inch round cake pan thoroughly—this little step helps your cake come out clean and intact, which is always a win!

Step 2: Sift and Combine the Dry Ingredients

In a medium bowl, sift together the all-purpose flour, cocoa powder, baking soda, baking powder, and salt. Sifting eliminates lumps and aerates the mixture, which helps create a light, tender crumb. Once combined, set this bowl aside while you work on the wet ingredients.

Step 3: Whisk Together the Wet Ingredients

Grab a large bowl and whisk the buttermilk, neutral oil, large room temperature egg, packed brown sugar, bright orange zest, melted dark chocolate, and espresso until everything is beautifully blended. The melted chocolate adds richness and moisture, while the espresso lifts those chocolate notes without overpowering the cake.

Step 4: Gently Fold Dry Ingredients Into Wet

Slowly add your dry ingredient mixture into the wet, mixing gently just until combined. Remember, over-mixing can lead to a tough cake, so keep your stirring light and stop as soon as you don’t see any flour pockets. This keeps the crumb tender and soft.

Step 5: Beat Egg Whites to Stiff Peaks

In a clean, grease-free bowl, beat the 3 egg whites until soft peaks form. Then, slowly add the granulated sugar and continue beating until stiff peaks appear—this means when you lift the beaters, the peaks stand tall without drooping. This step is key to a light, airy cake texture.

Step 6: Fold Egg Whites Into Batter

Gently fold the egg whites into your cake batter in three additions. Use a big spatula and fold carefully by cutting through the middle and sweeping around the edges, preserving as much air as possible. This technique keeps the cake wonderfully light when baked.

Step 7: Bake and Cool the Cake

Pour your batter into the prepared pan and pop it in the oven. Bake for 35 minutes, or until a toothpick inserted into the center comes out clean. As the aroma fills your kitchen, let the cake cool completely in the pan on a wire rack—that makes it easier to frost and slice later.

Step 8: Whip Up the Blood Orange Buttercream

While the cake cools, beat the room temperature unsalted butter in a bowl until fluffy and pale, usually about 3–5 minutes. Gradually add the cooled blood orange juice reduction and the zest of two blood oranges. Keep beating until the buttercream is smooth, creamy, and bursting with citrus flavor.

Step 9: Frost and Garnish Your Masterpiece

Once your cake has cooled completely, transfer it carefully to a serving plate. Spread the luscious blood orange buttercream evenly over the top and sides. For that wow factor, adorn with dried orange slices and fresh, food-safe flowers to create a beautiful, elegant finish that’s sure to impress.

Top Tip

Every step in the Orange Chocolate Cake with Blood Orange Buttercream Recipe plays a crucial role in balancing rich chocolate with bright citrus flavors. These tips come from plenty of baking trials so you can get that perfect texture and flavor harmony on your very first try!

Be Gentle with Egg Whites: Folding in the beaten egg whites carefully preserves airiness, giving your cake a light, tender crumb instead of a dense texture.
Simmer Blood Orange Juice Slowly: Reducing the juice gently prevents bitterness while concentrating the natural sweetness and bright citrus notes that make the buttercream so special.
Use Room Temperature Ingredients: Butter for the frosting and the egg in the batter should be at room temp to ensure smooth mixing and even texture.
Don’t Overmix the Batter: Combining dry and wet ingredients just until incorporated keeps your cake moist and tender — overmixing can make it tough.

How to Serve Orange Chocolate Cake with Blood Orange Buttercream Recipe

The image shows a round cake on a white plate, topped with smooth white frosting that has light, slight swirls on top. There is a single layer of dried orange and blood orange slices arranged around the edge of the cake. The dried citrus slices are placed close to each other, alternating between bright orange and deep red colors. The cake is set on a white marbled surface, surrounded by whole oranges, more dried citrus slices on another white plate, green leaves, and soft pink flowers. A clear glass of water is partly visible on the left side. The photo taken with an iphone --ar 2:3 --v 7

Garnishes

To highlight the vibrant character of this cake, I love to top it with delicate dried orange slices and fresh, food-safe flowers for a truly festive look that’s both rustic and elegant. You can also sprinkle a little extra blood orange zest on the frosting for a citrusy sparkle! Candied nuts or a drizzle of melted dark chocolate add a lovely finishing touch if you want to get creative.

Side Dishes

This cake stands beautifully on its own, but pairing it with a dollop of lightly whipped cream or a scoop of vanilla bean ice cream can elevate the experience. For something fruit-forward, fresh berries or a tangy raspberry coulis complement the chocolate and blood orange notes wonderfully. A warm cup of espresso or a blood orange cocktail makes an ideal beverage match.

Make Ahead and Storage

Storing Leftovers

Once frosted, store your Orange Chocolate Cake with Blood Orange Buttercream Recipe loosely covered at room temperature for up to two days. If your kitchen is warm, refrigerate it in an airtight container to keep the buttercream fresh without drying out the cake. Bring slices to room temperature before serving for the best flavor and texture.

Freezing

You can freeze the cake layers (unfrosted) for up to 2 months wrapped tightly in plastic wrap and foil. Thaw completely at room temperature before applying the buttercream frosting. If you've already assembled and frosted the cake, freezing is possible but may slightly affect the texture of the buttercream, so wrapping carefully and thawing slowly in the fridge is key.

Reheating

This cake is best enjoyed fresh or at room temperature. If chilled, let slices sit out for about 20 minutes to soften the buttercream. Avoid microwaving as the chocolate and frosting textures may change. If you want a warm bite, pair the cake with warm beverage instead!

Frequently Asked Questions:

Can I substitute regular oranges for blood oranges in the buttercream?

Yes, you can use regular navel or Valencia oranges if blood oranges aren’t available. The flavor will be a bit different, with less intense color and a milder citrus note, but still deliciously bright.

What’s the purpose of the espresso in the cake batter?

Espresso enhances the chocolate flavor by intensifying its richness, making the cake taste deeper and more complex without adding a coffee taste. You can substitute with strong brewed coffee if needed.

How do I know when the egg whites are beaten to stiff peaks?

When the egg whites hold sharp, firm points that don’t fall or droop when you lift the beaters, they have reached stiff peaks. This stage is key for creating a light and airy cake texture.

Is this recipe suitable for a dairy-free diet?

Yes! For a dairy-free version, swap the unsalted butter with a good quality vegan butter and replace the buttermilk with almond milk mixed with a splash of vinegar to mimic the acidity.

Final Thoughts

This Orange Chocolate Cake with Blood Orange Buttercream Recipe is such a joyful celebration of flavors—moist chocolate infused with lively citrus contrasts that brighten every bite. Whether you’re baking for a holiday, a special occasion, or just because, it’s a dessert that feels as joyful to make as it is to share. I hope you enjoy discovering your own moments of delight with this cake as much as I do!