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Keto vanilla mug cake with almond flour

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This keto vanilla mug cake is a moist, single-serve almond flour mug cake, gluten-free, dairy-free, and paleo-friendly. It’s perfect to fix a vanilla birthday cake craving with only 4g of net carbs.

Paleo vanilla mug cake

I have a passion for keto mug cakes, there’s no more secret about that! Low-carb mug cakes are true lifesavers on a keto diet because they help you fix your cake cravings in only 2 minutes with just 4g net carbs. Plus they are very fulfilling too as they contain a good amount of fat and fiber.

Almond flour mug cake

How to make almond flour mug cake?

Choose the right flour

It’s easy to make mug cake with almond flour. The trick to make a moist, fluffy almond flour mug cake is to use ultra-fine blanched almond flour. In fact, if you use ground almond or almond meal, the result will be gritty, dry, and even darker in color. Ground almonds or almond meals are made of whole almonds, skin-on and their ground is coarse and dark.

While it can be used in keto cake recipes, it doesn’t provide a bakery-style result as you used to love from wheat-based recipes. That’s why I always recommend using fine almond flour. This said some countries like New Zealand call almond flour almond meal!

This is very confusing so my tip is to look at the product itself. A good keto almond flour is white/gold in color, it’s ultra-fine as regular flour and it doesn’t have dark spots from almond skin.

How to make almond flour mug cake

Mug cake baking time

This is another tricky part! First, check your microwave power and use my recommendation below on baking time based on your microwave power. Note that most microwave ovens operate between at 600W, 800W, and 1000W.

Mug cake using almond flour

Below are the baking time recommended for an almond flour mug cake recipe based on these 3 microwave power levels.

  • 600 W – this is low power so you need to increase the baking time by another 20 seconds. The best texture will be achieved after about 100-110 seconds
  • 800W – that is what I am using in all my keto mug cake recipes and I microwave for 80-90 seconds
  • 1000 W – that is the max power of most microwave ovens which means less cooking time is required. Usually, 70-80 seconds will be perfect

Next, I recommend to always microwave the mug cake based on the lowest time provided. For example at 800W, start with 80 seconds, check the cake, and add those extra 10 seconds if the center is not set. Also, note that the mug cake keeps baking while cooling in the mug for 1 minute. That is why you shouldn’t over bake mug cakes or they tend to be overly dry.

Finally, if you don’t have a microwave oven, use your regular oven! Preheat the oven at 180C/350F and bake the mug cake for 8-12 minutes in the center rack of the oven.

Keto Vanilla Mug Cake Almond Flour

Keto vanilla mug cake ingredients

Now that you have all the information you need to choose the best almond flour for this almond flour mug cake, let’s have a look at the rest of the ingredients you need. A keto vanilla mug cake needs 7 wholesome ingredients:

  • Almond flour – read my note above for details on how to choose the best keto almond flour
  • Coconut oil – or melted butter. Both options work and provide different texture. Coconut oil makes the cake slightly chewier and spongy while butter makes the cake more moist and soft. Try both and see which one is your favorite!
  • Egg – at room temperature and pick a large one. I won’t stress this enough, cold eggs solidify coconut oil and make lumps in dairy-free keto baking and don’t taste as good. Also, small eggs make mug cake dry, so make sure you are using a large-size egg.
  • Erythritol or any sugar-free crystal sweetener that can be used as a 1:1 sugar replacement. This includes xylitol, Monk fruit erythritol blend If you are not eating sugar-free and you are simply after a tasty almond flour mug cake, any sugar can be used in the same amount. A healthy paleo option will be coconut sugar.
  • Baking soda
  • Vanilla extract or vanilla essence. If you can’t find some without sugar added, swap for vanilla stevia drops. Therefore, you will have to decrease erythritol to 1 tablespoon or the mug cake would be too sweet.

keto vanilla mug cake

More keto almond flour mug cake recipes

I love making almond flour mug cakes and I have plenty other flavors for you to try !

Low Carb Cinnamon Mug Cake Keto
Low Carb Cinnamon Mug Cake with almond flour
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Low Carb cinnamon mug cake or cinnamon muffin in a mug is an almond flour mug cake perfect to fix your cinnamon cravings.
Check out this recipe
Keto Lemon Mug Cake
Keto Lemon Mug Cake
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Keto Lemon Mug Cake easy 5-ingredient lemon mug cake with a delicious moist sponge texture
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Low carb mug brownie
Low carb mug brownie
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Low carb mug brownie for two, no microwave needed! A healthy keto fudgy brownie with no egg. Easy, gooey gluten-free chocolate peanut butter treat for Valentines day.
Check out this recipe

Enjoy the simple cinnamon keto mug cake and don’t forget to share a picture of your creation with me on Instagram.

XOXO Carine

Recipe Card

Almond flour mug cake

Keto vanilla mug cake

A 90-second almond flour mug cake with a delicious vanilla flavor
Prep Time: 5 mins
Cook Time: 2 mins
Total Time: 7 mins
1 mug cake


  • 3 tablespoons Almond Flour
  • 1/4 teaspoon Baking soda or 1/2 teaspoon baking powder
  • 1 1/2 tablespoon Erythritol
  • 1 tablespoon Coconut oil melted o melted butter
  • 1 large egg beaten, at room temperature
  • 1 teaspoon Vanilla extract or 2 drops Vanilla liquid stevia (if using this option decrease erythritol to 1 tablespoon)
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  • Grease a microwave-proof ramekin or mug with coconut oil, size 9 cm diameter (3.5 inches) and minimum 6 cm in height (2.3 inches). This will prevent the mug cake from overflowing when microwaving. Set aside.
  • In a small bowl, stir almond flour with baking soda and erythritol.
  • Whisk-in beaten egg, melted coconut oil and vanilla extract. Make sure the egg is not cold or it will solidify coconut oil forming lumps. For a moister cake, use melted butter, for a chewier cake use melted coconut oil.
  • Pour the batter into the prepared mug cake.
  • Microwave on high (800W) for 80-90 seconds or until set in the center. Make sure you check the microwave power, if yours is higher (100W) you may have to microwave the mug cake only 60-70 seconds to achieve the same texture.
  • Cool 60 seconds in the mug or flip over onto a plate.
  • Serve with a dust of sugar-free powdered erythritol and a dollop of unsweetened whipped cream on top (use coconut cream for dairy-free paleo option).
Are you a Keto Pro? Test your Keto knowledge with the Sweetashoney Keto Quiz!
Egg: this recipe is not working with flax egg or egg replacers. Make sure the egg is at room temperature to prevent the coconut oil from forming lump. 
Vanilla: if using vanilla stevia drops decrease erythritol to 1 tablespoon or the mug cake will be too sweet.
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Nutrition Facts
Keto vanilla mug cake
Amount Per Serving (1 mug cake)
Calories 322 Calories from Fat 261
% Daily Value*
Fat 29g45%
Saturated Fat 14g88%
Cholesterol 186mg62%
Sodium 345mg15%
Potassium 69mg2%
Carbohydrates 5g2%
Fiber 2g8%
Sugar 1g1%
Protein 11g22%
Vitamin A 270IU5%
Calcium 72mg7%
Iron 2mg11%
Net Carbs 3g
* Percent Daily Values are based on a 2000 calorie diet.

Keto almond flour mug cake

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  1. This was a total fail for me. The cake was dense and kind of oozing liquid? I do have to use egg whites because I’m allergic to yolks, but I’ve had success with your English muffin mug recipe so I was surprised that this went so poorly…

    • You mentioned that you only used egg white which explain why the cake was so dense and didnt work. By removing the yolks to remove 2 tablespoon of liquid and fat from the recipe. While it may work for a mug bread recipe that intend to be dense and dry it wont work for a cake. You need to balance the removal of tolk but some fat. XOXO Carine

      • Do you have any suggestions for how to make a mug cake without egg yolk? I’m desperate for an easy cake recipe like this but can’t eat egg yolk. Using egg whites only has worked for every other recipe I’ve tried except for this one 🙁

        • Not really because microwave baking dry out cakes very fast, removing the egg yolk make then dry and taste more like bread. I am sorry I can’t help more, XOXO Carine

  2. I love your website! Our favourite recipe is the peanut butter cookies. We tried this cake today but I think I messed something up. I used the best ingredients but The cake was dense and the bottom part had a blue colour to it. Do you have any idea why that would be? Furthermore I felt the cake had too much of an egg taste for me. Would decreasing the egg volume and using some milk for liquid work?

    • Thanks so much for following my blog recipe! Unfortunately you can’t decrease the egg amount of the cake will be very dry and won’t hold together with more milk. You can mask egg flavor in keto cakes by adding more vanilla extract, a pinch of cinnamon and always use egg at room temperature! that helps too. I am not sure how the cake could turn blue tho, or maybe you microwave the cake in a blue mug and something wrong with the mug itself. But none of this ingredients should turn blue. Enjoy the recipe, XOXO Carine

  3. Re-bonjour!
    I made the cake again tonight with baking powder (instead of baking soda) and it was delicious! I sent your website to some friends who are also low-carb/keto 🙂

  4. 4 stars
    Bonjour Carine!
    This is my first time leaving a comment…! I’m about 3 weeks into keto and your website has such great ideas to fill in the things I miss! I made this mug cake last night-the batter was delicious, but after microwaving my cake had a bit of a bitter taste. I’m wondering if it is because I used baking soda? I’ll try it again tonight with baking powder and see what that brings!
    Merci pour les recettes!

    • Yes/oui 🙂 Baking soda can leave a bitter aftertaste in baking. Some people feels it, some don’t . If you, hen use baking powder. A bientot! J’ai hate de voir ce que vous allez cuisiner ensuite! Carine.

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