Chocolate Orange Cake

A wonderfully soft Chocolate Orange Cake made using fresh oranges, topped with a fudgy chocolate orange ganache frosting. You won’t be able to stop at just one piece!

I’m converted. Not one to ever pick a chocolate orange dessert, I wasn’t sure how I would go when I decided to develop a recipe for a Chocolate Orange Cake. But I can honestly say, I’m now the BIGGEST fan.

I ate this cake almost every day this week, savouring every last bite of that fudgy choc orange frosting. It’s a fantastic celebration cake or Friday night fave for choc orange lovers everywhere – and those yet to join the bandwagon.

Since then I’ve made my Chocolate Orange Self-Saucing Pudding and my Chocolate Orange Brownies.

Why you will love this cake

• It’s undeniably choc orange with real fruit flavour.
• You don’t need any weird or hard-to-find ingredients.
• The cake is soft and tender and stays fresh for days.
• The chocolate ganache frosting is HEAVEN and can easily be made ahead of time.

Recipe testing

What I was looking for: A soft and tender chocolate cake infused with real orange flavour, thanks to plenty of orange zest and freshly squeezed orange juice. Cocoa is a strong flavour, so I wanted to make sure when you reached in to take a bite, you knew unmistakably that this was a choc orange cake.

I’ve also recently been testing recipes for chocolate ganache frosting and knew this rich, dark, fudgy frosting would pair beautifully with this cake. Infusing the cream with orange zest is an easy way to add even more flavour to this delicious frosting.

I used my favourite Chocolate Fudge Cake recipe as the starting point for this recipe. It creates a beautifully soft and tender cake, so I made a few tweaks to amp up the orange flavour and was SO happy with the result.

ingredients for the cake

• Butter: Salted or unsalted is fine. If you use unsalted, add a pinch of salt to the dry ingredients. Make sure your butter is softened to room temperature so you can easily beat it together with the sugar, until pale and creamy. This is commonly referred to as ‘creaming.’
• Caster sugar: Caster sugar is a fine white sugar used for baking in Australia. If you don’t have easy access to it, use granulated sugar instead. Read more about caster sugar here.
• Brown sugar: For a little extra flavour, we also add a little brown sugar. Light or dark brown sugar is fine. I typically use light (regular brown sugar in Australia).
• Eggs: Make sure your eggs are at room temperature so they will incorporate easily with the other ingredients.
• Plain flour: Use plain flour or all purpose flour for this recipe.
• Cocoa powder: This recipe calls for regular 100% natural cocoa. It should not be sweetened.
• Baking powder
• Baking soda
• Orange juice and zest: Use fresh oranges – you’ll need approximately three for this recipe.
• Full fat milk: Be sure to use full fat or whole milk for the cake, rather than light or reduced fat milk.

How to make it

1. Make sure your butter is softened to room temperature, then start by creaming together the butter and sugars using an electric mixer on medium speed. After a few minutes, your butter should be pale and creamy.
2. Add eggs, one at a time, and beat briefly on a low speed until mixture is combined. Your mixture may look at little curdled at this point – that’s ok! Scrape down the sides of the bowl.
3. In a separate bowl, add plain flour, cocoa powder, baking powder, baking soda and orange zest and lightly whisk together.
4. Then add dry ingredients, along with the freshly squeezed orange juice and milk, to the butter mixture. Mix on a low speed until all the ingredients are combined and you have a creamy chocolate cake batter. Perfect!
5. Pour chocolate batter into prepared cake pan and bake for approximately 30-35 minutes or until a skewer inserted into the middle of the cake comes out clean. Leave the cake in pan to cool completely, but place the pan on a cooling rack.  

Lets talk frosting

This frosting is truly amazing. It is basically a chocolate ganache, which is what you get when you combine chocolate and cream. But to make it extra special, we infuse the cream with orange zest and also add a little butter for richness. For the best results, start with the best ingredients.

Cream: Be sure to use a high fat (at least 30%) cream for the ganache frosting. Don’t use pre-whipped cream or a light/reduced fat cream. I tested this recipe using thickened cream.

Orange: You’ll need the zest of one orange, finely grated.

Dark chocolate: I recommend using a good quality block of dark or semi sweet chocolate (50-70% cocoa). I use either Nestle Plaistowe dark chocolate or Cadbury Baking dark chocolate for this recipe. Chocolate chips will work but since they are designed to keep their shape when baking, they can take longer to melt. I also prefer to chop a block of chocolate by hand so I’m in control of how fine I want it.

Butter: And a little butter, because butter ❤️ Salted or unsalted is fine.

How to make chocolate ganache

You can make ganache on the stove or in the microwave. For this frosting, I find the stove top method to be the easiest.

1. Begin by adding your cream to a medium saucepan and placing it on a low heat. Add orange zest. Stir gently and let it warm up until it’s hot to the touch. You may turn the heat up to medium but DO NOT let the cream come to a boil. Slow and steady wins the race here.
2. Add chopped chocolate and continue to stir until all the chocolate melts and ganache is smooth.
3. Finally, add butter. Stir until melted. Remove ganache from heat and transfer to a heatproof bowl. Leave to cool at room temperature for 15-30 minutes.
4. Cover with plastic wrap and pop in the fridge for 3-4 hours to firm up. I like to stir my ganache every hour to make sure it cools evenly.
5. When ganache is thick enough to spread, generously frost the top of your Chocolate Orange Cake.

Frequently asked questions

More chocolate cakes to try

• Chocolate Olive Oil Cake
• Chocolate Sheet Cake
• Chocolate Sour Cream Bundt
• Chocolate Loaf Cake

Did you make this recipe? Don’t forget to rate the recipe and leave a comment below. Hungry for more? Join me on Instagram, Facebook, Pinterest and Twitter for more amazing recipe ideas.

Let’s Bake

Chocolate Orange Cake

Yield Serves 12–16 pieces 1x

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 23 reviews

Prep: 270 minutesCook: 30 minutesTotal: 5 hours

Chocolate orange sheet cake topped with a fudgy chocolate orange ganache. 

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Ingredients

Chocolate orange cake

• 230 grams (1 cup or 2 sticks) unsalted butter, room temperature
• 200 grams (1 cup) caster sugar or granulated sugar
• 135 grams (3/4 cup) brown sugar
• 3 large eggs, room temperature 
• 245 grams (1 and 3/4 cups) plain flour or all purpose flour
• 60 grams (3/4 cup) cocoa powder, sifted
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• Zest of 2 oranges, finely grated
• 120 ml (1/2 cup) orange juice, freshly squeezed
• 240 ml (1 cup) full fat or whole milk

Chocolate orange ganache frosting

• 360 ml (1 and 1/2 cups) thickened or heavy cream*
• Zest of 1 orange, finely grated
• 400 grams good quality dark chocolate*, finely chopped
• 30 grams butter, softened

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Instructions

1. Chocolate orange cake
   Grease and line the bottom of a quarter sheet pan (9 by 13 inches) with baking or parchment paper. Preheat oven to 180 C (350 F) standard / 160 C (320 F) fan-forced.
2. In a large mixing bowl, add butter and sugars and beat with an electric mixer on medium speed until pale and creamy.
3. Add eggs, one at a time, and beat briefly on a low speed until mixture is combined. It may look a little curdled here – that’s ok. Scrape down the sides of the bowl.
4. In a separate bowl, add plain flour, cocoa powder, baking powder, baking soda, salt and orange zest and lightly whisk.
5. Add dry ingredients, along with the orange juice and milk, to the butter mixture. Mix on a low speed until all the ingredients are combined and you have a creamy chocolate cake batter. 
6. Pour chocolate batter into prepared cake pan and bake for approximately 30-35 minutes or until a skewer inserted into the middle of the cake comes out clean. Leave the cake in pan to cool completely, but place the pan on a cooling rack.  
7. Chocolate orange ganache
   Pour cream into a medium saucepan. Place on a low heat. Add orange zest and stir while cream is warming and being infused with orange flavour.
8. Once the cream is warm (but not boiling), add chopped chocolate. Continue to stir while chocolate melts and becomes smooth. Add butter and stir until melted. Ganache should be smooth and glossy.
9. Remove chocolate ganache from heat and transfer to a heatproof bowl. Let it cool for 15 minutes and then place it in the fridge for at least 3-4 hours. Give it a stir every hour. 
10. Once the ganache is thick enough to spread, frost top of cake using a small spatula. 

Notes

Cake shape and size: I used a quarter sheet pan (9 by 13 inches) for this recipe. You can use this recipe to make two 8 inch cakes or three 6 inch cakes.

Orange juice: I recommend using freshly squeezed orange juice for maximum flavour. However, if you would like to use bottled orange juice, just make sure it’s 100% orange juice. 

Cocoa powder: I tested this recipe with 100% natural cocoa powder – it should not be sweetened. 

Cream: Be sure to use a high fat (at least 30%) cream for the ganache frosting. Don’t use pre-whipped cream or light cream.  I tested this recipe using thickened cream.

Dark chocolate: I recommend using a good quality block of dark or semi sweet chocolate (50-70% cocoa). I make this recipe using either Nestle Plaistowe dark chocolate or Cadbury Baking dark chocolate.

Ganache frosting: This frosting will take a few hours to chill in the fridge. Time and temperature will turn the ganache from runny to thick and fudgy. Times will vary, so check on your ganache every hour, giving it a quick stir, until it reaches your desired consistency. My ganache takes roughly 3 hours to thicken. You can make it ahead of time but it will continue to harden in the fridge. So you can either, leave it out of the fridge to soften slightly or microwave for 20-30 seconds at a time, until it’s soft enough to work with. 

Watch How To Make It

Nutrition Information

Serving Size: 1 slice Calories: 451 Sugar: 36.9 g Sodium: 143.9 mg Fat: 26 g Carbohydrates: 53.8 g Protein: 6.3 g Cholesterol: 83 mg

Nutrition information is a guide only.

Author: Jessica HolmesCategory: CakeCuisine: British

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Jessica Holmes

Hi, I’m Jess, the creator of Sweetest Menu and the author of Something Sweet. A self-taught baker and published recipe writer who can’t stop making easy and delicious baking recipes.