Discover how to make THE BEST keto chocolate cake that tastes exactly like chocolate ganache.
You only need 6 simple ingredients and is perfect for a healthy birthday cake.
It's the supreme healthy chocolate cake that's sugar-free, gluten-free, and keto-friendly.
This flourless chocolate cake is so easy to make and tastes like a rich chocolate truffle or torte.
It's perfect as a party cake or celebration cake for adults and children. Even if you're low carb or not, they simply can't get enough of this keto chocolate cake recipe!
Baking 101 (tips & charts)
Ingredients you need
This low-carb chocolate cake is allergy-friendly. It's wheat-free, gluten-free, grain-free, no added sugar, and nut-free. I make it every time for my children's birthday parties.
It's an easy one-bowl recipe for a keto birthday cake with an optional keto chocolate frosting.
The best part of this healthy chocolate cake is that there are no expensive gluten-free or low-carb flours, and the simple easy ingredients for this cake recipe can be found in any local grocery store. You don't need any almond flour, coconut flour, cocoa powder, or even baking powder!
Here's what you DO need to put this keto chocolate cake together:
- 70% chocolate - the darker the chocolate, the less sugar it contains. On the other hand, a higher percentage can often lead to a bitter flavor. I've found 70% to be just the right amount for this keto cake recipe.
- butter - you can use salted butter or unsalted butter, but you may need to add a pinch of salt.
- vanilla extract - I always recommend purchasing the best quality of vanilla extract (vanilla essence) possible as it makes a huge difference in cake recipes or other baking recipes.
- eggs - make sure your eggs are fresh. They can be used straight from the fridge or at room temperature.
- heavy whipping cream - or double cream
- granulated sweetener of your choice - I personally love erythritol, monk fruit sweetener, and/or stevia. These don't seem to give the bitter after taste that some sweeteners do and I always ensure I buy the brands that measure spoon for spoon as a sugar replacement.
For exact quantities, please see the keto chocolate cake recipe card below.
Note: Many brands of sweeteners that are coming into the grocery store, can be double or triple strength. So ALWAYS read labels and check the strength of the brand you purchased.
TOP TIP: As with ALL recipes here, ALWAYS taste your batter BEFORE cooking to ensure you have added enough sweetener to suit YOUR tastebuds. Read the Ultimate Guide To Low-Carb Sweeteners.
How to make keto chocolate cake
Let's chat about how to make this chocolate keto cake recipe! This easy recipe only requires 2 steps using the simple ingredients listed above
STEP 1: Make your chocolate mixture.
Melt the chocolate and butter in a medium saucepan over low heat. Remove the saucepan from the heat.
STEP 2: Make your egg mixture.
Mix the double cream, eggs, vanilla extract, and sweetener in a large mixing bowl.
Mis together with a beater, hand whisk, or fork.
STEP 3: Mix the chocolate mix and the egg mix.
Slowly pour the egg mixture into the warm chocolate mixture, stirring continuously before each addition.
The thickened chocolate cake batter will be luxurious and incredibly rich.
STEP 4: Bake
Prepare your loose bottom baking pan by oiling it with butter and placing a circle of baking parchment paper at the bottom.
This helps to remove the keto chocolate cake without it splitting.
Pour the cake batter into the parchment-paper-lined cake tin and bake until cooked in the center but be careful not to overcook it. Nobody wants a dry chocolate cake.
This is the best keto chocolate cake because it is so moist and rich.
Once cooked, remove it from the oven and place it on a wire cooling rack until it cools completely before decorating.
How to serve keto chocolate cake
- whipped cream and berries
- keto chocolate frosting (keto chocolate buttercream)
- drizzle with melted sugar-free chocolate chips
- sprinkle with a dusting of powdered sugar replacement (sugar-free confectioners sugar)
There are a few ways you can make this sugar-free chocolate cake your own. Here are a few ideas to get you started:
- dark chocolate drizzle - melt some dark chocolate chips and drizzle it all over the top of the chocolate cake.
- add keto chocolate frosting - want even more chocolate flavor? Add a keto chocolate frosting (keto chocolate buttercream) frosting to the top!
- give it a brandy soak - this variation is for adults only! While the chocolate cake is still lovely and warm from the oven, pour a small amount of brandy over the top whilst it's still warm.
- make it portable - you can also bake this easy keto cake in a square dish. Then, cut into tasting squares. Top each piece of keto chocolate cake with a fresh berry. This is an easy idea to take as finger food to share with friends.
- mocha (coffee chocolate cake) - add some espresso powder or an espresso shot to the chocolate cake batter.
How to reduce the carbs
To make this keto chocolate cake recipe even lower in carbs, you can use a higher percentage of cacao chocolate. Be aware that others who are not sugar-free may find it slightly bitter so that's why I stick to the 70% which seems to please everyone.
In the keto chocolate cake recipe below, I have calculated the carb value when using different percentages of cacao chocolate blocks.
Nutrition information when using other percentages of chocolate
70% = 246 cal 12g carbs 7.7g sugar 21g fat 3.7g protein
75% = 250 cal 10.8g carbs 5.2g sugar 21.8g fat 4g protein
85% = 235 cal 5.7g carbs 2.9g sugar 22.3g fat 4.5g protein
ALWAYS calculate using the brand and variety of chocolate you have used in the recipe.
How to host a sugar-free birthday party
To make an easy keto birthday cake, make a two-layered cake.
Pour the chocolate cake batter into two cake pans to create two cake layers. Bake for a shorter time (you can easily convert your baking pan sizes and cooking times) and allow each layer to cool completely.
To decorate the frosted keto chocolate cake spread half your keto chocolate buttercream on the first layer. Place the second layer on top then cover the entire cake with the remaining frosting (buttercream).
If this has inspired you to rethink your next birthday party and host a sugar-free birthday party, then take a look at my previous article packed with practical tips, tricks, and delicious easy child-friendly recipes.
More keto cake recipes
If you aren't a fan of deep chocolate flavor...skip this decadent dessert! You might enjoy one of my other keto cakes instead such as this keto strawberry cheesecake in a mug or my 1-minute low-carb lemon cake.
Here is my entire catalog of sweet low-carb keto baking, delicious recipes, and desserts if you're after more low-carb cakes. And be sure to cover them with any of the 6 keto buttercream frosting flavors.
- Sugar-free and gluten-free flourless chocolate fudge cake
- Keto raspberry cheesecake (raspberry swirl cheesecake)
- Low-carb lemon cupcakes (sugar-free cream cheese frosting)
- Flourless orange cake (whole orange cake)
- Keto carrot cake
Always use unsweetened cocoa powder in sugar-free treats, keto cakes, and low-carb recipes.
The most popular sweetener is powdered sweetener such as powdered erythritol, monk fruit, allulose, or xylitol.
To guarantee a moist cake, always check in the center with a toothpick or sharp knife and cook until only JUST cooked, Overcooking is the number one mistake that ruins a good cake recipe.
The cake was probably overmixed, not enough liquid was added, too much flour was used, or it was cooked for too long.
Place the leftover cake in an airtight container and store it in the fridge for up to 3 days.
No, almond flour behaves completely differently from coconut flour. Try to use a recipe that has already been developed using one flour or the other.
No, the melted butter gives a rich flavor to the sugar-free chocolate cake that coconut oil cannot. You could use ghee (clarified butter).
No, there is too much butter and cream in this to begin using a dairy-free substitute.
Please rate this recipe.
Keto Chocolate Cake Recipe (Flourless Chocolate Cake)
- Melt the chocolate and butter together over low heat in a saucepan. Remove from the heat and allow to cool slightly before adding the vanilla extract.
- In another bowl beat the eggs, cream, and sweetener together for 3-4 minutes (use a stick blender or hand whisk). It will go frothy and remain runny.
- Slowly add the egg mixture to the chocolate mixture in the saucepan, stirring all the time. As you add more egg mixture, the chocolate and butter will thicken to the consistency of custard.
- Pour into a prepared tin (see below). Grease a loose bottom cake tin with butter then line the loose bottom with baking paper and push through the outer ring so the baking paper adds a seal and stops the cake mixture from leaking.
- Bake at 180C/ 350F for 20 - 30 minutes, or more depending on your oven. Bake until it is just set in the center (be careful not to overcook the cake).
- 70% = 246 cal 12g carbs 7.7g sugar 21g fat 3.7g protein
- 75% = 250 cal 10.8g carbs 5.2g sugar 21.8g fat 4g protein
- 85% = 235 cal 5.7g carbs 2.9g sugar 22.3g fat 4.5g protein
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Approximate nutrition information is provided for convenience and as a courtesy only. For the most accurate nutritional data, use the actual ingredients and brands you used in your preferred nutrition calculator.