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Nutella Keto Mug Cake

4.7 stars, average of 123 ratings

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Have you ever tried to make a mug cake? It literally takes just a few minutes to prepare this keto treat packed with healthy fats! I know, some of you don't want to use a microwave or don't have one - for that purpose I included some tips for baking the mug cakes in the oven.

Are Microwaves Safe?

Do we really have to be afraid of any harmful effects? Contrary to what many people believe, most studies show that microwaves don't decrease the nutritional value of foods. This is down to cooking times that are usually shorter and the cooking also requires less water. In fact, every kind of heating and reheating decreases the nutritional value of foods so you should only reheat foods when needed. I personally don't use a microwave every single day but simply when it's more convenient.

Don't have a microwave? If you don't have a microwave, I suggest you make 4-8 servings at once. Preheat the oven to 175 °C/ 350 °F and cook for about 15 minutes or until cooked in the centre.

Tips & Substitutions

You can use 1 tablespoon of coconut flour instead of 2 tablespoons of hazelnut meal and use a dash of hazelnut extract instead. If you don't have coconut flour, you can use 2 tablespoons of finely shredded desiccated coconut instead.

Too "eggy"? Although I like this combination, some of you may perceive it as too "eggy". You can try the following: use one egg, double all the dry ingredients and add 1/4 cup coconut milk, almond milk or cream. This mixture will make 2 mug cakes.

Instead of the listed sweeteners, you can try other healthy low-carb sweeteners from this list.

Hands-on Overall

Serving size 1 mug cake

Allergy information for Nutella Keto Mug Cake

✔  Gluten free
✔  Dairy free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Coconut free
✔  Fish free
✔  Shellfish free
✔  Beef free


  • Recipe can be made dairy-free or coconut-free.

Nutritional values (per 1 mug cake)

Net carbs3.7 grams
Protein9.7 grams
Fat28.7 grams
Calories310 kcal
Calories from carbs 5%, protein 12%, fat 83%
Total carbs7.2 gramsFiber3.6 gramsSugars2 gramsSaturated fat13.9 gramsSodium209 mg(9% RDA)Magnesium59 mg(15% RDA)Potassium260 mg(13% EMR)

Ingredients (makes 1 serving)


  1. Place all the dry ingredients in a mug or a ramekin and combine well. Nutella Keto Mug Cake
  2. Add the egg, coconut oil and mix well using a fork. Microwave on high for 70-90 seconds.
    Nutella Keto Mug Cake
  3. When done, you can optionally top the mug cake with whipped cream or creamed coconut milk or full-fat yogurt and season with a pinch of cinnamon. Enjoy! Nutella Keto Mug Cake

Nutella Mug Cake

4.7 stars, average of 123 ratings
Nutella Mug Cake
Low-carb mug cakes are so easy to make and are the perfect single-serve dessert. This keto chocolate hazelnut mug cake is sugar-free and grain-free!
Hands on5m

Ingredients (makes 1 serving)

  • 2 heaping tbsp ground hazelnuts (16 g/ 0.6 oz)
  • 1 tbsp raw cocoa powder, unsweetened (5 g/ 0.2 oz)
  • 1/8 tsp baking soda
  • 2 tbsp Erythritol or Swerve (20 g/ 0.7 oz), or more to taste
  • 1 large egg
  • 1 tbsp melted virgin coconut oil, ghee or butter (15 ml)
  • Optional: 2 tbsp whipped cream, coconut milk or full-fat yogurt and a pinch of cinnamon


  1. Place all the dry ingredients in a mug or a ramekin and combine well.
  2. Add the egg, coconut oil and mix well using a fork. Microwave on high for 70-90 seconds.
  3. When done, you can optionally top the mug cake with whipped cream or creamed coconut milk or full-fat yogurt and season with a pinch of cinnamon. Enjoy!

Nutrition (per 1 mug cake)

Net Carbs3.7g
Saturated Fat13.9g

Detailed nutritional breakdown (per 1 mug cake)

Net carbsProteinFatCalories
Total per 1 mug cake
3.7 g9.7 g28.7 g310 kcal
Hazelnuts, nuts, unblanched
1.1 g2.4 g9.7 g100 kcal
Cocoa powder, raw (cacao)
1.1 g1.1 g0.7 g12 kcal
Erythritol (natural low-carb sweetener)
1 g0 g0 g4 kcal
Baking soda, raising agent (bicarbonate of soda)
0 g0 g0 g0 kcal
Egg, whole, fresh, raw (free-range or organic eggs)
0.4 g6.3 g4.8 g72 kcal
Coconut oil, extra virgin
0 g0 g13.5 g121 kcal
Stevia extract (SweetLeaf or NuNaturals, natural low-carb sweetener)
0.1 g0 g0 g0 kcal

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Martina Slajerova
Creator of

Martina Slajerova

I changed the way I ate in 2011, when I was diagnosed with Hashimoto’s, an autoimmune disease that affects the thyroid. I had no energy, and I found it more and more difficult to maintain a healthy weight.

That’s when I decided to quit sugar, grains, and processed foods, and to start following a whole-foods-based ketogenic approach to food.

Let us know what you think, rate this recipe!

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Comments (35)

This is my first attempt ever at making a keto dessert and may I just say what took me so long! Its delicious and ever so satisfying. Even my husband (who is not on keto) loved it and I think he will soon convert. 😊 We are making it again very soon! Thank you.

Thank you so much Lin, glad you enjoyed!

Can this be made with Monk fruit instead? Would it be the same amount as the erythritol? Thanks!

Yes, you could! You could use any other sweetener (low-carb if you are keto) to taste. Granulated monk fruit based sweeteners may be slightly sweeter than pure erythritol but for 2 tablespoons the difference is negligible so you can swap them the same way.

This mug cake is yummy!  For the liquid stevia I used Better Stevia brand Dark Chocolate.

Thank you Barbara!

DIVINE! The taste, the smell, amazing! i made it twice..the second time i used almond flour...just perfect

Thank you for your lovely feedback!

Just made this. So good and so easy! Thank you so much!

Thank you Jo, glad you liked it!

I'm trying this now. How big mug do I need?

Hi Lana, I used a ramekin that fits about 3/4 cup so 3/4-1 cup should work 😊

I must be doing this wrong because it's like bitter scrambled eggs with an awful sweetener aftertaste. How bit does the mug need to be for the above measurements?

Which sweetener did you use? Maybe you can skip the stevia and use just Erythritol? You may want to try using one egg, double the dry ingredients and add 1/4 cup of coconut milk and make two mug cakes instead of one? I'm fine with it but some people may perceive it as too "eggy".

Maybe I'm missing it, but I don't see the calorie count, although I know it's not that important to count calories, I'm just curious how many calories this mug cake has.  I tried it again exactly like the recipe, and it satisfies my sweet tooth.  I'm "hooked" on this mug cake.  It's the best I have tried!  Thank you for this delicious creation!!

Hi Marie, one serving is 305 kcal / "calories". That's great, I'm glad you like it! 😊 Thanks!

Bit eggy in texture. Maybe one egg over two or three cakes and a bit of almond milk.

Yes, you can make 2 servings if you add some almond milk or coconut milk. I'd also add some more nut / coconut flour.

Wow, this was more than a snack; it was a filling meal, and really delicious.  Can't wait to make this again, and so easy and quick.  You're a genius!! I didn't have hazelnuts, so I used a combo of pecans and walnuts.  One thing I think I will add next time is a pinch of salt.  I hope that won't spoil the recipe in any way, but I like that sweet and a bit salty taste.  Your site is one of my favorites!  I have the window open all the time and love reading and learning everything.

Thank you Marie!! Glad you liked it 😊

I'm fine, although  my leg hurts. Cake was yum

Just made this. It's absolutely  gorgeous.  I needed a treat as I had an accident  at the gym this morning

I'm sorry to hear that Catherine, hope the cake made you feel better!

I am definitely going to try this. I am five years out from gastric by pass and keeping it offi can't wait to try this. Can you sub almond flour ?

Hi Patty, yes definitely, you can use any nut flour 😊

How easy is that?! I just made it and what a great treat. It took longer to eat it than make it, and not much washing up as it's made in the same dish! Great to have an alternative to almond flour in a muffin. I think this might make it onto the breakfast menu occasionally...!

Glad you liked it Chris!! 😊

Thanks for including the oven tips for those of us who doesn't have a microwave! x

Sure, you're welcome Oline! 😊

Hey! I am doing a mug cake round up on Friday and I am glad you posted this. I will slip it in and include it (even though the graphic says 27, now it will be 28!).

Thank you so much Carolyn, that would be great! 😊

Wow! This looks awesome! Where do you come up this these awesome creations ???
Can't wait to try it😊

Thank you Shelly, hope you like it! 😊)

I would love some more mug cake recipes if anyone has others or can point me in the right direction please email me at

Hi Emma, you might want to check out these: