Keto Vanilla Mug Cake (Paleo, Vegan)

5 from 236 votes

A super fluffy and moist vanilla mug cake made with protein powder and is low carb- It’s also ready in under a minute! This healthy Keto Vanilla Mug Cake takes less than a minute to make in the microwave or 12 minutes in the oven- It’s paleo, vegan, gluten-free and sugar free!

Vanilla Protein Mug Cake Recipe

Low Carb Vanilla Mug Cake

We love our single serve mug cake recipes on here. From blueberry mug cakes, chocolate mug cakes and even lemon mug cakes, there is a recipe here for everyone!

When it comes to flavors, nothing comes close to the classic vanilla. It is like a blank canvas and can be dressed up in multiple ways.

Ever since I’ve started weight training regularly, I’ve made an effort to add protein to all my meals and snacks. Contrary to popular belief, you can add protein powder to desserts, especially into mug cakes. 

Enter- the protein powder mug cake! 

What is a protein mug cake? 

A protein mug cake (protein powder cake in a mug) is a single serve cake that uses a combination of protein powder, eggs (or vegan substitute), milk and other extras to create a light, fluffy and gooey mug cake.

Unlike traditional mug cakes, protein mug cakes are super low carb, packed with protein and usually are made without flour or sugar. 

protein powder mug cake recipe that tastes like a vanilla cake

How to make a vanilla mug cake with protein powder

Step 1: In a large mixing bowl, combine your dry ingredients and mix well. Add your wet ingredients and mix very well, until a thick and smooth texture remains.

Step 2: Transfer your vanilla mug cake batter into a greased mug or microwave-safe cereal bowl. 

Step 3: Microwave the protein powder mug cake for 1-2 minutes, or until ‘just’ cooked. Remove from the oven and enjoy immediately! 


Vanilla Protein Mug Cake Recipe

How to make a protein vanilla mug cake in the oven

For those who don’t have access to a microwave or prefer not to use one, you can easily make this protein powder mug cake recipe in the oven. 

To make a microwave protein cake in the oven, you follow the microwave instructions but instead of microwaving it, you will bake it for 12-15 minutes at 180C/350.

Remove the vanilla protein mug cake from the oven once a toothpick comes out of the center ‘just’ clean.

How to make a protein mug cake without eggs (vegan) 

To make this vanilla protein cake vegan-friendly and eggless, you won’t need to replace the eggs with another substitute.

Simply increase the amount of liquid used by 2 tablespoons (or more, if the batter is too thick) and continue baking as normal.

A quick note on the vegan option- It will not ‘puff’ up as much and will be moist in the center

Best protein powder to use

No protein powder is created equal and many brands differ considerably.

I tried this mug cake out with several blends of protein powder and these were the best-

Vegan Brown Rice Protein Powder

A brown rice vanilla protein powder works best, as it is thick and creamy (when added to liquid) and has a very pleasant flavor. 

Depending on the brand you use, you may need to add a little extra liquid (milk or water) to achieve a thick and smooth batter. 

Casein Protein Powder

For those who can tolerate dairy, I recommend using casein protein powder. It’s thick, tastes delicious, and doesn’t dry up when baked or used in cooking. 

Casein protein powder is also keto, low carb and sugar free. 

Paleo Protein Powder

I would only use a paleo protein powder blend if you follow a strict paleo diet. It isn’t as thick as casein protein or brown rice protein, but still can be used.

Please DO NOT use any whey based protein powder, as it doesn’t lend itself well to baking, and requires very little liquid. 

More recipes with protein powder

Vanilla Protein Powder cake in a mug

Watch the step-by-step video below!

Keto Vanilla Mug Cake Recipe

Healthy 1 Minute Keto Vanilla Mug Cake

A super fluffy and moist vanilla mug cake which packs a protein punch and is low carb- It's also ready in under a minute! This protein powder mug cake is Paleo, vegan, gluten free, keto, grain free and sugar free!
5 from 236 votes
Print Rate
Course: Dessert, Snack
Cuisine: American
Prep Time: 1 minute
Cook Time: 1 minute
Total Time: 2 minutes
Servings: 1
Calories: 170kcal
Author: Arman



For the microwave option

  • Grease a microwave safe bowl with cooking spray and add the protein powder, baking powder, coconut flour, sweetener of choice and mix well.
  • Add the egg and mix into the dry mixture. Add the milk of choice and vanilla extract- If the batter is too crumbly, continue adding milk of choice until a very thick batter is formed. 
  • Top with chocolate chips and microwave for 60 seconds, or until just cooked in the centre.

For the oven option

  • Follow as above, but bake in the oven for 8-15 minutes, depending on consistency desired- Mug cake is cooked once a toothpick comes out 'just' clean from the center.


* For the vegan option, you won't need any flax eggs/egg substitute- Simply omit and slowly add milk of choice until a thick batter is formed. Microwave/bake until 'just' cooked in the center.


Serving: 1mug cake | Calories: 170kcal | Carbohydrates: 7g | Protein: 29g | Fat: 6g | Fiber: 4g | Vitamin A: 100IU | Vitamin C: 1.7mg | Calcium: 20mg | Iron: 0.4mg | NET CARBS: 3g
Tried this recipe?Give us a shout at @thebigmansworld or tag #thebigmansworld!

Low Carb Vanilla Mug Cake Recipe

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    57 thoughts on “Keto Vanilla Mug Cake (Paleo, Vegan)

    1. Hi! I just wanted to drop a comment because I just made this recipe! I used vanilla Aloha protein powder and no egg. ?The coconut flour is really unique in its powers to absorb liquids and therefore it helps fluff up this cake. I have made other mug cakes with flour so to all of those commenters wondering about substituting coconut flour, you should go find a recipe utilizing what you desire. Just for reference, you’d probably need 3-4 tbsp of flour if you go that route.
      This recipe was great though! ?Suggestion: I’d love a peanut butter version of this mug cake. Can that be a thing? Pretty please? ?

    2. This is awesome! I made it tonight with Watkins Banana Extract, which is artificial, but it was just a few drops, and it turned out great! I have been so bad lately and I have diabetes and heart problems, so I am thankful to find something that will fill the void of the sugar I MUST give up! Thank you!

    3. Hey! First off love all of your recipes, they’re so great and creative. You may not know the answer and people may say this defeats the purpose given it is titled “low carb”, but if not wanting as much protein and not super concerned about carbs, from your experience do you think you could replace some/all of the protein powder with some sort of flour? Wasn’t sure if the protein powder might specifically act as a binder or something? They are similar consistencies so wasn’t sure if you thought that would be doable as I like the makeup and ingredients in the rest of the cake. Thanks!

    4. Omg this is soo good!! I have used a bunch of quest protein powders to make it and havent been disappointed yet! Vanilla with pb and chocolate chips, cooked and cream, chocolate, and peanut butter (sometimes I’ll add pb and/or chocolate chips). Can’t go wrong. Thanks for this awesome recipe!!

    5. Ive been making your recipes for a bit now and I just wanted to drop by and give u a quick ,but enormous, thank you!!! I was having a really hard time finding healthy alternatives that my 12 year old and 4 year old twins would actually eat. Still working on getting them to eat vegetables and healthy protein dinner options since all 3 of my boys are a little anemic . They will eat plain avacados all day long ,which is great, but that’s the only healthy food they will eat …..knowingly. So once again , from me and my 3 crazy …..I mean amazing , boys …. THANK YOU for creating these healthy sweet bites that my kids and I actually crave!

    6. I’ve tried a few protein mug cakes, but this is by far my favorite.

      I couldn’t find my coconut flour, so for those of you asking for different substitutes, I used almond flour. However, I screwed up adding 1/4 c milk, so I’d probably limit that to two tablespoons. My batter was a little thin so I just added a touch more almond flour (about 1/2 tbsp) and a little more protein powder (I use Orgain Vanilla Protein Powder). I used Lakanto monk fruit sugar, which is the best sugar substitute that is calorie free, in my opinion. It still has carbs but no calories…? Or must be very low.

      This was awesome, even with the subs. Thank you!

    7. Thank you for the recipe! I’ve been meaning to make a Keto mug cake for ages but always forget! I need to try this in the run up to Christmas for a treat! Sim x

    8. I don’t know why but my batter does not thicken!!

      I tried to add a little more protein powder and a tad more coconut flour to thicken it but doesn’t work. And the mix isn’t crumbly either

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