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Low Carb Chocolate mug cake with coconut flour

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4.91 from 263 votes
Carine Claudepierre -

Say hello to this delicious low carb chocolate mug cake (aka. keto mug cake) with only 6g net carb and 250 kcal per serve. Low Carb Chocolate mug cake recipe with Coconut Flour. Only 4.7 g net carb per serve and 130 kcal., 9 g protein. Gluten free, keto, sugar free and paleo.

It’s that time of the day, you crave that chocolate cake you saw at the bakery. But then you go back home and realize you ave nothing in your cupboard to fix that chocolate craving. So let’s call this keto mug cake to the rescue.

What is a low carb chocolate mug cake ?

A low carb chocolate mug cake is a one-serve, 90-second microwave cake recipe made with low-carb, sugar-free ingredients. I like to call this a life-saver cake because it fixes your sweet craving in no time. Plus, it really tastes like a real bakery-style chocolate cake. You won’t be disappointed by this simple keto mug cake recipe.


Keto Mug Cake



How much carbs in this chocolate keto mug cake?

This low carb chocolate mug cake has it all. It tastes amazing and contains only 6.5g net carb per serve. So I hear you, you think it’s a lot of carb especially if you target 25g net carb a day. But, should I remind you that a regular chocolate muffin contains 27 grams net carb? This said, you have two options. Not having a cake on keto low carb diet (which I believe is torture haha) or indulge on this and have cheese and lettuce for dinner. How does it sounds?

This keto mug cake also contains 12 grams of proteins and 6 grams of fiber. Therefore it will fuel you up and you won’t need a large dinner after this for snack. 

A sugar-free chocolate cake

This sugar-free chocolate mug cake is made with only 5 ingredients.  All you need to make this recipe are very simple low carb ingredients. Let’s have a look at what you need to fix your chocolate craving now.

  • Almond flour or almond meal, both work very well
  • Coconut flour
  • Sugar-free crystal sweetener like erythritol or xylitol
  • Egg, don’t replace by an egg-free alternative
  • Unsweetened cocoa powder
  • Baking powder 

I highly recommend to add a pinch of sugar-free chocolate chips in your mug cake for an extra chocolate flavor. And if you feel like extra treats are needed, add that extra drizzle of peanut butter and melted sugar free chocolate on top of it. What is better than peanut butter and chocolate, really?

More low carb keto mug cake

I have plenty of other easy keto mug cake recipes for you to try on the blog:

Enjoy the lovely keto chocolate mug cake recipe.

 xoxo Carine

Recipe Card

Low Carb Chocolate mug cake recipe with Coconut Flour. Only 4.7 g net carb per serve and 130 kcal., 9 g protein. Gluten free, keto, sugar free and paleo.

Low Carb Chocolate mug cake with Coconut Flour

Low Carb Chocolate mug cake recipe with Coconut Flour. A keto mug cake with only 6.5 g net carb per serve and 250 kcal. A healthy 5 minutes guilt free snack. Dairy free, sugar free, gluten free and sweetened with natural Simply-Stevia. 
Prep Time: 5 mins
Cook Time: 1 min
Total Time: 6 mins

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Net Carbs
Author: Carine Claudepierre
1 mug cake
4.91 from 263 votes
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Toppings - optional

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  • In a small mixing bowl, whisk egg, erythritol, unsweetened almond milk, oil and baking soda.
  • Stir in almond meal, coconut flour and unsweetened cocoa powder.
  • Pour into a mug or ramekin.
  • Microwave 1 min increase by 30 seconds burst if needed. It is cooked when the top of the cake is firm and pop out of the mug.
  • Enjoy immediately. If you like drizzle one teaspoon of creamy peanut butter on top and melted sugar free chocolate. 
Net carbs: 6.5 g per serve
Milk options: you can use the milk of your choice like coconut milk, soy mik or regular cow milk.
Baking alternative: if you don't have a microwave, grease a oven-proof ramekin with coconut oil, fill in and bake in hot oven 350 F (180 C) for 10-15 minutes or until a skewer inserted in the middle of the cake comes out clean.
Sweetness: you can increase the sweetness of your mug cake by using 3 tablespoons of erythritol
Almond meal swap: for a nut free recipe swap almond meal by sunflower seed flour
Tried this recipe?Mention
Nutrition Facts
Low Carb Chocolate mug cake with Coconut Flour
Amount Per Serving (1 mug)
Calories 254 Calories from Fat 167
% Daily Value*
Fat 18.6g29%
Carbohydrates 12.2g4%
Fiber 5.7g24%
Sugar 2.3g3%
Protein 11.9g24%
Net Carbs 6.5g
* Percent Daily Values are based on a 2000 calorie diet.

Keto chocolate mug cake


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  1. 5 stars
    I’ve made this several times already. So easy and delicious. I put 1 square of Lindt dark chocolate in the centre for extra gooey-ness.
    Thank you for this recipe. It really hits the spot when I’m craving for cake.

  2. 5 stars
    I absolutely love it!I literally just munched mine within a minute . My hubby loved it too. Thank you for sharing!

  3. 5 stars
    I Love this Chocolate Mug Cake recipe! I am on the Candida Diet and this is candida friendly recipe. Really helps when I’m craving cake. It’s so quick and easy to make.

  4. 5 stars
    I love the chocolate mug cake and today I was going to look at your site to see if there were other mug cakes and guess what, my email today from you had just that! I was glad to get the lemon. peanut butter, and cinnamon recipes for more mug cakes. Thank you so much. They have really improved my breakfast menus.

    • Oh thank you ! I also like them for breakfast, so easy and fast to prepare. Keep an eye around the blog, I promise more tasty mug cakes to come soon. XOXO Carine.

  5. 5 stars
    The only thing I crave on the Atkins Diet is Chocolate from time to time. Just made this delicious Mug Cake and you don’t know how happy I am that you shared this recipe. I made it just as described, however I topped mine with 1/4 up of Blueberries and a couple of tbs. of sugar free whipped topping. Thanks again.

  6. I don’t have the sachets, i have granulated stevia. how much should be used?
    I really wish for all these recipes people would give more alternatives for sweeteners

    • I am not sure what you called granulated stevia, if it is pure stevia it is the same as used in this recipe in the little packet. One packet is 1 gram so use 1 g of any stevia, powdered or granulated. Taste and adjust before baking regarding your taste. The recipe has alternatives, it says either use 2 tablespoon erythritol which is a granulated stevia erythritol combo – swerve brand in US. Enjoy the mug cake. XOXO Carine.

    • Not really as flaxmeal contains way more fiber than almond flour and you will need way less. However you can try my flaxseed mug cake if you prefer to bake with flaxmeal. Let me know how it goes, XOXO Carine.

    • What a great idea! I love hazelnuts and chocolate, such a great combo. Thanks for sharing here! Enjoy the recipes on the blog and thanks for trying some ! XOXO Carine.

    • Thanks for trying my mug cake recipe. I am so glad you enjoy it! Topping can be simple, try unsweetened whipped cream of a drizzle of melted sugar free chocolate and dollop of peanut butter. Yum! xoxo Carine

    • I am so glad you enjoy this mug cake for breakfast. It contains coconut flour, which means lots of fiber that keep you full for long! I hope you find more delicious recipes to try on my blog. XOXO Carine.

  7. 5 stars
    A microwave dessert that actually tastes fabulous.
    I boo-boo’d on the recipe by adding 1 T of coconut flour instead of 1 t, and no matter, the recipe turned out fabulous.

    I made a chocolate ganache frosting to top it…heavenly combination:
    1T butter
    1 T almond milk
    1/3 C sugar free Chocote wafers
    1/2 t chocolate extract

    Thank-you for this awesome tasting FAST dessert. I’ve made it twice, perfect!!!

    • WOW! That chocolate ganache is a must try ! Thanks so much for sharing your whole recipe in comment, I am pretty sure plenty of my fellow reader will give this a go. Trust, me I will ! Thanks so much for taking some time to add such a positive comment and adds on. Love from NZ. XOXO Carine.

  8. If we cook it to have it for the next day, what is the best way to preserve it? Can it last outside in room temperatura or should I put it in the fridge?

    • I wouldn’t recommend to microwave a mug cake ahead. Microwave baking must be eaten within 30 minutes or the texture gets weird, chewy, dry out. If you cook this batter in the oven it will store well at room temperature as a regular muffin but don’t store baked goods in the fridge – the taste and texture change a lots. Enjoy the low carb recipes on the blog. XOXO Carine.

  9. 5 stars
    This was awesome i used 2tbsn sweetener and dark chocolate powder.
    Then replaced the peanut butter with almond butter, tbsn butter and tbsn of dark cocoa powder and melted together. . oh my word

  10. What is the reason for the almond meal or ground flax alternate? I’ve recently discovered that anything I make with almond flour or meal, I just cannot stand the taste. It’s so weird.. but coconut flour is doable, so how would this work by either leaving it out or increasing the coconut flour?

    • If you increase coconut flour it will be crumbly and won’t hold together.If you don’t like almond meal or flaxmeal you can use different nut or seed ground like hazelnut ground or even oat flour – not low carb tho. Low carb baking recipes often calls for a mix of almond meal and coconut flour to get the perfect texture. Coconut flour is very liquid absorbent and makes baked goods crumbly if not balanced with a different flour. You can also use tapioca flour, arrowroot flour but they are not low carb as well. Enjoy the recipe. XOXO Carine.

  11. 5 stars
    I never leave comments but I just have to cause this is THE best mug cake recipe ever!!! It’s so moist and perfectly sweet to satisfy a sweet craving. Thank you for sharing this awesome recipe!!!


The recipes, instructions, and articles on this website should not be taken or used as medical advice. You must consult with your doctor before starting on a keto or low-carb diet. The nutritional data provided on Sweetashoney is to be used as indicative only. The nutrition data is calculated using WP Recipe Maker. Net Carbs is calculated by removing the fiber and some sugar alcohols from the total Carbohydrates. As an example, a recipe with 10 grams of Carbs per 100 grams that contains 3 grams of erythritol and 5 grams of fiber will have a net carbs content of 2 grams. Some sugar alcohols are excluded because they are not metabolized. You should always calculate the nutritional data yourself instead of relying on Sweetashoney's data. Sweetashoney and its recipes and articles are not intended to cure, prevent, diagnose, or treat any disease. Sweetashoney cannot be liable for adverse reactions or any other outcome resulting from the use of recipes or advice found on the Website.

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