Healthy Low-Carb Carrot Mug Cake

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This low-carb carrot mug cake uses almond flour instead of regular flour so you can still enjoy the wonderful warming spice and sweetness of a carrot cake, even while on a low-carb diet.

» Check out these great Keto Mug Cakes and these Homemade Low Carb Ice Cream Recipes.

Low Carb Carrot Mug Cake

Little treats like a mug cake can make a keto or low-carb diet easier to adhere to, if you have a bit of a sweet tooth. That’s why I’ve added quite a few mug cake recipes to our website. If a quick mug cake can satisfy your craving for things like carrot cake, you’ll be more likely to adhere to the diet long term.

Traditional carrot cake is one of my favorites. It was one of my go-to cakes for celebrations and dessert for holidays, like Easter. I thought I’d have to give it up after choosing a low-carb lifestyle, because there are a huge amount of carbs in a regular carrot cake. But luckily that’s not the case.

As with most things, you can definitely make carrot cake in a low-carb way, so you aren’t ingesting 100+ grams of carbs in a single slice. Using almond flour and a sugar substitute, this variation of your favorite carrot cake is just as tasty.

This low-carb carrot cake can be mixed up and microwaved in under 5 minutes. It’s large enough for about 3-4 small servings, or it can be served as breakfast for 2.

I think it’s great for entertaining. You can easily mix it up if someone pops over to your house, and serve it with a pot of tea. The flavor is spot on. And the texture isn’t a whole lot different from the flour version. It’s very unlikely anyone would be able to say it’s low-carb unless they knew.

Low Carb Carrot Mug Cake

There are 7 net grams of carbs per serving when cut into 3 slices. If you divide it in two, there are 10 net grams of carbs per serving.

Ingredients You’ll Need

  • Shredded carrots
  • Almond flour – I don’t recommend substituting the almond flour with coconut flour. First of all, it’s a very different measurement ratio, so a direct substitution won’t work, but mainly because it won’t be as moist with coconut four.
  • Cinnamon and pumpkin pie spice
  • Baking powder
  • Sugar substitute – I use allulose as a sugar substitute. You can use Swerve, monkfruit, Erythritol or Xylitol. It’s really up to you. The reason I use allulose is because it’s a no calorie no carb sweetener like erythritol, but it doesn’t have the cooling effect. 
  • Butter
  • Heavy cream
  • Egg
  • Walnuts – Chopped and toasted.
  • Frosting ingredients – Butter and powdered sugar substitute.

How to Make Carrot Mug Cake

The cake is simple to make. You’ll need to grate the carrot. I just use a manual cheese grater. You can use a food processor, if you wish.

Then mix all the cake ingredients together in a bowl.

carrot cake ingredients

Mix together until it’s well blended. A mixer or food processor isn’t necessary for this. It’s really easy to just stir it all up with a spoon.

mixed carrot cake batter

You can bake this in two separate ramekins or mugs to make 2 individual cakes, or you can put it all into a larger ramekin or a small baking dish. I use a 12oz ramekin. I like that it comes out looking like a little cake.

Just lightly grease the mug or ramekin before scooping in the batter to keep the cake from sticking to the sides.

Then spread the batter out evenly in the dish.

carrot cake

For me, it takes about 2 1/2 minutes to cook in the microwave on high. I have an 800 watt microwave. If yours is more powerful, it might only take 2 minutes, or it might take slightly longer, like 3 minutes.

Start with 2 minutes. Then test the middle. If it’s jiggly at all in the middle, it’s not quite done. The top might still be a bit wet looking, but as long as the center is firm, it’s done. Try not to overcook it. To avoid that, cook in 15-30 second spurts after the 2 minute mark.

Finally, mix up the glaze ingredients in a bowl. You’ll spoon this over the top of the cake once it’s done baking, just before serving. It’s best to serve while it’s still warm. The glaze will melt down the sides of the cake. It’s glorious.


I don’t recommend substituting the almond flour with coconut flour. First of all, it’s a very different measurement ratio, so a direct substitution won’t work, but mainly because it won’t be as moist with coconut four.

If you don’t like the cooling effect of Erythritol sugar substitute, you can use Xylitol or another sweetener of your choice. Keep in mind that xylitol has more carbs and calories than Erythritol.

Tips and Notes

  • This recipe is not designed for coconut flour.
  • You can use your choice of sugar substitute: erythritol, xylitol, allulose, swerve.
  • Can be split into 2 separate cakes.
Low Carb Carrot Mug Cake

Keto Mug Cake FAQs

If you’ve never made mug cake before, you might have a few questions. Here are some of the most frequently asked questions I receive about this recipe.

How do mug cakes work?

Mug cakes are so easy to make that it gets you wondering how it works, especially since it takes so long to bake a cake in the oven. The magic of a mug cake is in the leavening agents, which are the egg and baking powder.

When heated, the baking powder reacts with the other ingredients and forms bubbles that help the cake rise, while the rest of the ingredients cook.

What do I need to make a mug cake?

You’ll need the ingredients (obviously), but then the only other things you need are a microwave and a microwave-safe mug. I just use my regular tea/coffee mugs. You could also use a ramekin. You just need a mug or ramekin that’s larger than the cake ingredients, because it does rise a couple of inches in the mug.

What wattage do I cook this on?

I cook my mug cake at full power in a 900-watt microwave. If you have a more powerful microwave, you may need to cook the cake for 70 or 80 seconds instead of 90. Once you’ve cooked one mug cake, you’ll know for next time.

In my opinion, it’s better to under cook then over cook, so if this is your first mug cake cook it for 80 seconds on full power. If it’s still wet in the middle, cook for 10 seconds longer. If it’s a bit tough or dry, you can reduce by 10 seconds next time you make it.

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More Recipes from Delightfully Low Carb

Low Carb Carrot Mug Cake

Low Carb Carrot Mug Cake

Enjoy the warming spices and sweetness of a carrot cake, even while on a low-carb diet.
4.90 from 29 votes
Print Rate
Course: Dessert
Cuisine: American
Keyword: Carrot
Prep Time: 2 mins
Cook Time: 3 mins
Total Time: 5 mins
Servings: 3 serving
Calories: 352kcal
Author: Laura


  • 3 tablespoons shredded carrot
  • 3/4 cup almond flour
  • 2 tablespoons Erythritol
  • 1 1/2 teaspoons cinnamon
  • 1 teaspoon pie spice
  • 1 teaspoon baking powder
  • 2 tablespoons melted butter
  • 1 tablespoon heavy cream
  • 1 egg
  • 2 tablespoons walnuts chopped and toasted



  • Mix all of the cake ingredients together in a mixing bowl to form the batter.
  • Lightly grease a microwave safe ramekin or baking dish that’s large enough for the ingredients to double in size as it cooks.
  • Pour the batter into the dish and microwave for 2 minutes. Check for doneness by lightly touching the top of the cake. It should bounce back and not feel loose or uncooked. The very top might still be a bit wet to the touch, but will be spongy. If it’s loose or uncooked, put it back in for another 30 seconds.


  • This recipe is not designed for coconut flour.
  • You can use your choice of sugar substitute: erythritol, xylitol, allulose, swerve.
  • Can be split into 2 separate cakes.


Calories: 352kcal | Carbohydrates: 11g | Protein: 9g | Fat: 33g | Saturated Fat: 10g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 5g | Trans Fat: 0.5g | Cholesterol: 90mg | Sodium: 264mg | Potassium: 115mg | Fiber: 4g | Sugar: 2g | Vitamin A: 3014IU | Vitamin C: 1mg | Calcium: 178mg | Iron: 2mg

The information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for a professional nutritionist’s advice.

Other Keto Mug Cake Recipes To Try

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Low Carb Carrot Mug Cake
Healthy Low-Carb Carrot Mug Cake

13 thoughts on “Healthy Low-Carb Carrot Mug Cake

  1. Emily Flint says:

    5 stars
    Wow, this is what dreams are made of, this mug cake was so good. This recipe is one of my new favorites!

  2. sarah says:

    5 stars
    I love how quick this cake is to make and it’s so delicious. It definitely cured my carrot cake craving! thanks for the great recipe.

  3. Sue says:

    5 stars
    I’m loving all your mug cakes, but the way the glaze is dripping down this carrot cake is drool-worthy!

  4. Bintu | Budget Delicious says:

    5 stars
    You just can’t beat a mug cake when you want that hit of sweetness really quickly. This sounds so delicious and I love that it is low carb!

  5. Mindy says:

    Super delicious! The texture is amazing. I’m curious how you come up with your carb count of 11?? Assuming you are using net carbs but with my almond flour (9 net carbs for 3/4 c) Stevia powdered sugar (18 carbs in 2 Tbsp) and carrots (didn’t even add the walnuts), just wondering if you are doing something different? I’m counting 27 carbs. If splitting that’s still a pretty great low carb dessert, would just love to know if you have lower carb ingredients, thanks! Or maybe I’m calculating way incorrectly??

    • Laura says:

      Hi Mindy. Glad you liked it! This mug cake has 3 servings, which will definitely change your carb count a bit. Also, the Erythritol does have total carbs, but zero net carbs, so it doesn’t count towards your daily carb allowance on keto.

  6. Tara says:

    Lovely cake that has become a daily staple. I have it with Greek yogurt and berries for my breakfast. Can I ask please, is it 352 calories for the whole recipe or per serving?

    • Angela says:

      Hi Tara, we are so glad you like the carrot mug cake. It is one of our favorites. There are 3 servings in this recipe and 352 is the calorie count for one serving.

  7. Beth says:

    This looks wonderful! Carrot cake has been a favorite for many years. What can I use in place of “pie spice?”

    • Angela says:

      Hi Beth, you can replace the pie spice with just cinnamon, or you could leave the spice out all together.

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