Keto Mug Cake


5 from 82 votes
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This keto mug cake is the ultimate low carb dessert for one that takes just ONE minute to bake! Moist, fluffy, and easy to make in the oven, it comes with EIGHTEEN flavor options! 

keto mug cake

While there are a plethora of keto desserts I have up my sleeve, mug cakes are my favorite. They require minimal prep and there is no temptation to overeat, as they are portion controlled. 

Why this keto mug cake recipe will be a game changer-

  • Ready in one minute. Seriously, the bake time for this cake is just one minute, thanks to the magic of a microwave! They don’t call this a microwave mug cake for nothing! 
  • Simple and easy ingredients. No hard-to-find ingredients or unusual flours needed. You probably have everything in your pantry right now! 
  • It’s satisfying and keeps your diet on track. One mug cake satisfies your sweet tooth completely and you won’t be searching for something else after. 

What I love about keto mug cakes is just how many options there are. You can make a mug cake every single night after dinner for dessert, and have a different cake flavor every single time. We’ve included a simple keto mug cake recipe, along with 18 other flavors to try! 

How to make a keto mug cake

The Ingredients.

  • Coconut flour– Sifted to ensure there are no clumps. If you can’t find coconut flour in the grocery store, you can make your own
  • Cocoa powder– Unsweetened and sifted coconut flour. 
  • Brown sugar substitute– Also known as keto brown sugar. If you don’t have any, erythritol or monk fruit sweetener can be used. 
  • Baking powder– Leavening agent used to give the cake a slight rise. 
  • Salt– Just a pinch to balance out the sweet ingredients. 
  • Butter OR coconut oil– I prefer using melted butter, but coconut oil works just as well. 
  • Eggs– Room temperature eggs. 
  • Milk of choice– I used unsweetened coconut milk, but any keto friendly milk can be used. 
  • Chocolate chips– Skip the expensive store-bought kind and make your own sugar free chocolate chips

The Instructions. 

Start by whisking together the dry ingredients in a small bowl. Add the melted butter, eggs, and milk and whisk until a smooth batter remains. If using chocolate chips, fold them through at the end.

Now, transfer the batter into a greased mug or microwave-safe bowl. Microwave for 1-2 minutes, before enjoying immediately. 

low carb mug cake

Can I bake this in the oven? 

If you don’t own a microwave or prefer not to use one, you can easily make this mug cake in the oven instead. 

Simply prepare the recipe as instructed, except for the oven option, transfer the batter into an oven safe ramekin. Bake at 180C/350F for 8-10 minutes, or until firm on top. 

18 keto mug cakes to try

Cinnamon Roll Mug Cake

cinnamon roll mug cake

Protein Brownie

whey protein mug cake

Vanilla Mug Cake

vanilla mug cake

Blueberry Mug Cake

blueberry mug cake

Chocolate Mug Cake

keto chocolate mug cake

Lemon Mug Cake

lemon mug cake

 Almond flour mug cake

almond flour mug cake

Banana Bread Mug Cake

banana bread mug cake

Coffee mug cake

coffee mug cake

Hot Chocolate Mug Cake

hot chocolate mug cake

3-Ingredient Flourless Brownie

flourless brownie mug cake

The Ultimate Low Carb Brownie

low carb brownie in a mug

Chocolate Chip Mug cake

chocolate chip mug cake

Lava mug cake

keto lava mug cake

Peanut butter mug cake

peanut butter mug cake

Carrot Cake mug cake

carrot cake mug cake

Flourless Chocolate Mug Cake

flourless chocolate mug cake

Frequently Asked Questions

Can I eat a keto mug cake every day? 

Keto mug cakes are single-serving desserts perfect to enjoy every single they. They are relatively low calorie and suitable for a healthy dessert option or even snack! 

Why does a keto mug cake come out dry? 

Mug cakes come out dry because of over-baking them or overcooking them. The key to the perfect moist and cake-y mug cake, is to ensure the batter is thick and smooth. It is best to undercook it and adjust the cooking time from there. 

Can I make mug cakes ahead of time?

You can batch-cook the mug cakes and refrigerate leftover ones for up to one week. They need to be re-heated in the microwave for 20-seconds before enjoying them.

keto mug cake recipe

Keto Mug Cake (18 flavors!)

5 from 82 votes
This keto mug cake is the ultimate low carb dessert for one that takes just ONE minute to bake! Moist, fluffy, and easy to make in the oven, it comes with TEN flavor options! 
Servings: 1 mug cake
Prep: 1 minute
Cook: 1 minute
Total: 2 minutes



  • Grease a microwave-safe bowl or mug.
  • In a small bowl, add the dry ingredients and mix well. Add the wet ingredients and whisk together until a smooth batter remains. Fold through the chocolate chips.
  • Transfer the batter into the greased mug and microwave for one minute.
  • Remove the mug cake from the microwave and enjoy immediately.


To make this mug cake in the oven, prepare the cake as instructed. When ready to bake, transfer the batter into a greased ramekin and bake at 180C/350F for 8-10 minutes.


Serving: 1mug cakeCalories: 194kcalCarbohydrates: 6gProtein: 9gFat: 18gSodium: 299mgPotassium: 169mgFiber: 4gVitamin A: 644IUCalcium: 113mgIron: 2mgNET CARBS: 2g
Course: Dessert
Cuisine: American
Author: Arman Liew
Tried this recipe?Give us a shout at @thebigmansworld or tag #thebigmansworld!

Disclosure: This post may contain affiliate links. I may earn a small commission for my endorsement, recommendation, testimonial, and/or link to any products or services from this website.

Arman Liew

I’m a two time cookbook author, photographer, and writer, and passionate about creating easy and healthier recipes. I believe you don’t need to be experienced in the kitchen to make good food using simple ingredients that most importantly, taste delicious.

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Recipe Rating


  1. 5 stars
    I made the carrot mug cake but used (2 tbls almond flour and 1 tbls oat flour) and the whole egg. Topped with cream cheese frosting. It was delicious! Will try the other recipes you have as well, thank you!

  2. Wow what a great recipe easy and very satisfying keto dessert. Eager to try the other mug cake flavor options

  3. 5 stars
    O.M.G. I was seriously dubious about any dessert that’s keto/low carb but…..these were freaking delicious!! Even my daughter’s boyfriend who wouldn’t have a clue what keto is 😂 devoured them!! I’m so excited to have such a quick and delicious dessert that I can enjoy guilt free!! Happy days!! 🤩🤩 Thank you so much!! ❤️❤️❤️❤️

  4. 5 stars
    I’ve made many mug cakes, and this is hands down the best one EVER. I made the choc-chip one (as you do), will definitely make more. One bite & I was like, OMG this is amazing! Jumped back on the low carb wagon just a few days ago and already super grateful for your recipes.

  5. 5 stars
    thank you, nice to have so many options, and really appreciate your making these keto friendly with coconut flour, the choc chips and other additional ingredients add some nice flavor too!

  6. Hi, are the calories for each mug available anywhere? I’m trying to count calories but these look healthy and delicous enough to try. Thanks

    1. Hi there! Click on the links- Some are included, and if not, feel free to calculate it using myfitnesspal or similar 🙂

  7. OMG! Thank you so much for sharing the mug cake Recipie!! These are so simple and delicious! I’ve experimented w/other Keto Recioie before and they are usually for multiple servings. They also tasted grainy. :(. But your recipie is perfect and it’s so much easier that it’s single serving plus, the oven option too. Thank you for making my Keto diet more enjoyable.

  8. I looked on Amazon for vanilla protein powder, but there are so many choices I became confused. What type/brand was used when creating these recipes?

  9. Mug cakes are seriously my favorite since they’re so convenient! You’re the best for creating all of these! Thanks dude!