The Ultimate Healthy Chocolate Protein Mug Cake

The Ultimate Healthy Chocolate Protein Mug Cake

Chocolate mug cake

The ultimate 170 calories healthy chocolate protein mug cake that’s low carb, high protein and tastes incredible. My healthy keto-friendly mug cake takes a couple of minutes to prepare and cooks in under a minute! After baking this mug cake – this will be the only recipe you’ll need to remember.

Healthy Chocolate Protein Mug Cake

At Fitness to Diet we love our recipes, and we’re starting to roll out a whole new series of quick, healthy snacks that are packed full of the macro and micronutrients your body needs.

We also understand how tough it can get when you’re cutting sugars and carb-heavy foods, so we’ve experimented plenty to get the right balance of flavor and nutrients. This recipe has no eggs, no bananas, and no flour. With a total of 26g of protein and only 8g of carbs, 4g of fat – it’s a no brainer. Who would have thought that cakes could be healthy!

What is a mug cake?

Simple. A cake in a mug. Made famous initially the by NutellaMug Cake, it’s essentially microwaving a handful of ingredients to produce acake in a mug.

Our take on this is to use Whey Protein as the core ingredient to ensure a high protein content, as well as balancing the texture with our other ingredients.

You can really take this recipe and make it your own. I always tend to use high-quality Whey Protein and Optimum Nutrition is the brand I've chosen for the last 10 years. If you want to go for a bold chocolatey flavor then ‘Double Rich Chocolate’ is great. ‘Cookies and Cream’, 'Chocolate Peanut Butter' have both worked a treat too. Optimum Nutrition is great as it includes 5.5g of BCAA’s too which is an added bonus.

Cocoa Powder is important to get right - given that you'll be using such a little amount it's worth spending a little extra for a higher quality premium product. Seven Mills do a fine powder, as do Naturya

I’ve tried this recipe with whole milk, semi-skimmed, and almond milk. If you can spare the extra calories I’d recommend whole milk – but almond milk works just as good. Whole milk gives it some extra volume and flavor which isn’t that bad for a total of 4 grams of sugar.  

Whey Protein + Chocolate Mug Cake

Whey Protein + Chocolate Mug Cake


  • 30g / ¼ Cup Optimum Nutrition Whey Protein Powder

  • 5g / 1 Teaspoon Cocoa Powder

  • 2.5g / ½ Teaspoon Baking Powder

  • 60ml / ¼ Cup Milk


Mix the Whey Protein, Cocoa Powder, and Baking Powder carefully in a mug with a teaspoon.

Add the milk and keep stirring until everything has mixed and you have a nice consistency.

*Important part*

Microwave time. Start with 30 seconds. Check on it, then another 5-10 seconds whilst watching carefully. You don't want it to be a solid cake - the goal is to have it half-baked and gooey.

It might take a few attempts to get this right, and when you do it’s a game changer. It’s important not to let the mixture overcook as Whey has a propensity to turn very spongy and inedible.

When microwaving, keep watching (especially the last 10 seconds) as the mixture rises, and stop roughly as it reaches the top of the mug.

When you take it out the texture should be gooey, moist, and very chocolatey.


For 170 calories, no eggs, flour, or bananas, and jam-packed with protein - you'll struggle to find a better alternative. If you do have any alternative recipes - drop us a comment below!


Delicious Healthy Chocolate Whey Protein Mug Cake. This mug can also be used for chicken soup :D

Importance Of Sleep For Athletes 😴 Avoiding Injuries and Improving Performance 🏅

Importance Of Sleep For Athletes 😴 Avoiding Injuries and Improving Performance 🏅

This Is How Exercise Benefits The Brain 🧠 - The Science

This Is How Exercise Benefits The Brain 🧠 - The Science


Fitness to Diet
Eat Well. Train Smart. Known More.

Some recommended products may use affiliate links. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon and the Amazon logo are trademarks of, Inc or its affiliates.