World's Best Keto Chocolate Cake

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This may be the World's Best Keto Chocolate Cake. In fact I'm so confident about it, it’s what I’ve named it. 🙂

What makes this cake so great? Firstly — it’s a cinch to make, and does not require any complicated processes. And of course it's delicious — and is actually better on days 2 or 3, rather than drying out like a regular cake might. As always, it's gluten-free ad sugar-free.

For this low-carb chocolate cake, I wanted a dense cake that didn’t collapse whilst cooling, which meant no baking powder, and no whisking the eggs, which makes this cake really simple.

I also wanted to re-visit the delicious chocolate ganache I made for my Keto Chocolate Blender Cupcakes After all, what makes a chocolate cake even better? Dark chocolate ganache of course!

What is the Best Low-Carb Sweetener For Fudgy Cake?

You can use Erythritol based sweeteners or a blend of Erythritol and stevia. Just keep in mind that some sweeteners are sweeter than others so make sure to check out our sweetener conversion chart.

If your aim is a moist, fudgy cake, you'll get the best results with Xylitol although not everyone can tolerate this low-carb sweetener. I find Erythritol dries out cakes a little quicker, but you could easily substitute a different sweetener or blend if you prefer.

Is Dark Chocolate Keto?

We used 90% dark chocolate but any dark chocolate with at least 85% cacao is a good low-carb option. Although there is a small amount of sugar, the carb count is low and it's one of the ingredients that can be used in moderation when you follow a healthy low-carb diet. You can also use sugar-free chocolate (dark, milk or even white if you can get it) sweetened with stevia or inulin.

How To Make Nut-Free Keto Chocolate Cake

The best alternative to almond flour in this recipe would be ground sunflower seeds. If you want to use coconut flour instead, you'll need to replace the a cup of almond flour with about 1/4 cup (30 g/ 1.1 oz) coconut flour and add one more egg.

How To Make Dairy-Free Keto Chocolate Cake

Butter is the best option for flavour but if you can't eat dairy, you could try ghee. Ghee is made from butter but is usually well tolerated as milk solids are removed. Other than ghee, you can try virgin coconut oil or palm shortening.

Palm shortening is made from palm oil. Beware that the standard practice for harvesting palm trees to produce palm oil destroys tropical forests and habitats of endangered species! Always opt for sustainably sourced palm oil and palm shortening.

What if My Ganache Splits?

If your ganache splits, place it in a food processor and process for a few seconds until smooth.

Another way to make the ganache (apart from the method used in the recipe) is to heat up the cream with butter and then take it off the heat. Add the dark chocolate broken into pieces and let it melt undisturbed for about 5 minutes. After 5 minutes, whisk until smooth and glossy. Set aside to cool down before frosting the cake. This method may be better as the ganache rarely splits.

Hands-on Overall

Nutritional values (per serving, 1 slice)

Net carbs5 grams
Protein6.7 grams
Fat30.3 grams
Calories310 kcal

Calories from carbs 6%, protein 8%, fat 86%

Total carbs8 gramsFiber3 gramsSugars2.7 gramsSaturated fat14.8 gramsSodium31 mg(1% RDA)Magnesium86 mg(22% RDA)Potassium274 mg(14% EMR)

Ingredients (makes 12 servings)

Chocolate cake:
Chocolate ganache:


  1. Preheat oven to 170 °C/ 340 °F (conventional), or 150 °C/ 300 °F (fan assisted). Line the base and sides of a 20 cm/ 8" springform pan with non-stick baking paper.
  2. To make the cake, roughly chop the chocolate and the butter, and add in a saucepan over low heat. Stir until melted. Add the vanilla and stir through.
    World's Best Keto Chocolate Cake
  3. Add the erythritol, almond meal and cacao to a bowl and stir to combine. Add the eggs and stir through until combined. World's Best Keto Chocolate Cake
  4. Slowly pour in the chocolate mixture, stirring until it’s all mixed through and smooth.
    World's Best Keto Chocolate Cake
  5. Pour into the prepared tin and cover with foil. Bake 40-45 minutes or until firm to touch on top.
    World's Best Keto Chocolate Cake
  6. Remove the foil and allow the cake to cool completely in the tin.
    World's Best Keto Chocolate Cake
  7. To make the ganache, add all ingredients to a small saucepan (you can use the same one as before to reduce washing up!), and melt over the lowest possible heat, stirring constantly. Set aside and let it cool down or chill in the fridge for 10-15 minutes. Stir to combine before frosting the cake. Worried that your ganache may split? check our tips in the recipe above! World's Best Keto Chocolate Cake
  8. To serve, remove the chilled cake from the fridge.
    Spread the ganache on with a knife.
    World's Best Keto Chocolate Cake
  9. Lasts up to 5 days in a sealed container at room temperature.
    World's Best Keto Chocolate Cake

Ingredient nutritional breakdown (per serving, 1 slice)

Net carbsProteinFatCalories
Extra dark chocolate, 90% cocoa (cacao)
2.2 g1.7 g9.4 g94 kcal
Butter, unsalted, grass-fed
0 g0.1 g7.6 g68 kcal
Eggs, free-range or organic
0.1 g2.1 g1.6 g24 kcal
Erythritol (natural low-carb sweetener)
0.6 g0 g0 g3 kcal
Almond flour (blanched ground almonds, almond meal)
0.7 g1.8 g4.4 g49 kcal
Cocoa powder, raw (cacao)
0.4 g0.4 g0.2 g4 kcal
Vanilla Extract, homemade (KetoDiet blog)
0 g0 g0 g1 kcal
Extra dark chocolate, 90% cocoa (cacao)
0.8 g0.6 g3.5 g35 kcal
Cream, heavy whipping, pouring, full-fat (30-40% fat)
0.1 g0 g1 g9 kcal
Erythritol (natural low-carb sweetener)
0 g0 g0 g0 kcal
Butter, unsalted, grass-fed
0 g0 g2.5 g23 kcal
Total per serving, 1 slice
5 g6.7 g30.3 g310 kcal
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Comments (9)

Love this cake made it today so easy and tasty. My ganache split any advise how to make it successfully? Thank you


Hi Viviane, that can happen and it happens to me too. I'll add my own note for making the ganache as it always works and it's so easy! You can still fix it if it splits. I do that by placing it in a food processor for a few seconds - it will be super smooth again!


Thanks so much!


Thank you, Dearna, for a fun and easy chocolate cake recipe that can be whipped up quickly. The taste is deep smooth chocolate and the texture and crumb are somewhat delicate, it is dense not so much like a brownie, but more like a coffee cake. The ganache topping was a perfect addition, so creamy and smooth. One slice with one scoop of sugar free strawberry ice cream was so satisfying to my need for a chocolate dessert tonight. Not one ingredient nor step  should be changed. My cake looked slightly moist on the middle top after baking and removing the foil, but after cooling it was beautiful and perfectly cooked.


Thank you so much for your lovely feedback! I'm happy you enjoyed!


Also, if you wanted to bake into two smaller cakes, what size of pan would you recommend and how long would you recommend baking them?


I'd love to help but I would only be guessing since I don't know the size of the pans. Depending on the size of the pan and how much the dough spreads, the baking time will decrease. As with any chocolate cakes, you will have to keep an eye on the cake as you won't be able to see if it burns - and as always this can happen with nuts. Start testing with a toothpick after about 30 minutes (if using smaller pans).


Does the cake freeze well?


Hi Amber, yes, this kind of cake will freeze well.