Protein Chocolate Chips Mug Cake

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Skinny protein mug cake with gooey chocolate chips. A fluffy and delicious mug cake that has 35 gr of protein. Also, I have a keto version that is just as good.

protein mug cake

Lately, you’ve probably noticed that I’m into the mug cake trend — I know that this trend has been going on for a few years, I’m always late in food trends XD. I just can’t get enough of their convenience.

I’ve already made chocolate mug cake and vanilla mug cake in this blog. However, in my daily life, I can’t be eating regular mug cakes — full of sugar — every day. I save them for specific times.

(BTW – Am I the only one that can’t let go of Game of Thrones and despises the ending? My Starks mug is a cruel reminder)

But, what happens when my heart says “another mug cake, please” and my waistline tells me“drink a protein shake, for the love of God, woman!”? I make a skinny protein mug cake and EVERYBODY is happy.+


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How do you make skinny protein mug cake?

Easy peasy.

It takes the same amount of time than regular mug cakes. It’s all about making small changes.

IngredientHealthy Substitution
Sugar Low-calorie sweetener
Flour Whole wheat flour + vanilla whey protein powder
Whole milk Soy or almond milk

Simple swaps that lower the calorie intake without sacrificing the flavor.

You can eliminate the egg and add an extra ½ tsp of coconut oil to balance the oil that the yolk provides. Be aware that the cake will be less fluffy and more compact, but the flavor remains the same.

Can I make a keto protein mug?

Of course, you can swap the whole wheat flour with coconut flour and the mug cake will be completely keto.

I prefer the consistency of coconut flour much more than the almond flour’s.

Almond flour gives a compact and kind of dry mug cake. Coconut flour gives a lighter and fluffier cake. Especially when you add coconut oil. Fluffy and moist at the same time.

What type of whey protein do I use?

Isolated vanilla whey protein. I use Prozis — not sponsored —because it’s a cheap but medium quality protein. Also, it’s quite easy to find this protein brand in Portugal.

I save my high quality — an expensive — protein for my shakes.

But I also love to use Prozis isolated vanilla protein for pancakes, muffins and now mug cakes. 

How many calories are there in this whey protein mug cake?

One portion if this mug cake has approximately 300 calories. The good part is that it provides 35 grams of protein (if you use the egg).

It’s a great snack before and after working out. Especially if you are doing weight lifting. I like it for my leg days when I need an extra boost to endure the training.


  • Candied pecans
  • Walnuts
  • Chocolate chips (my absolute fav) 
  • Macadamia nuts
  • Peanut butter (extra protein and healthy fats) 
5 from 1 vote
protein mug cake
Protein Chocolate Chips Mug Cake
Prep Time
2 mins
Cook Time
1 min
Total Time
3 mins
Skinny protein mug cake with gooey chocolate chips. A fluffy and delicious mug cake that has 35 gr of protein. Also, I have a keto version that is just as good.
Course: Dessert
Cuisine: American
Keyword: chocolate chips mug cake, healthy mug cake, protein mug cake
  • 1 large egg
  • 1 tsp coconut oil
  • 3 tbsp whole wheat flour
  • 2 tbsp powdered sweetener
  • 2 tbsp soy milk
  • 1 scoop vanilla protein powder
  • ½ tsp vanilla extract
  • ½ tsp baking powder
  • 1 tbsp chocolate chips
  1. In a mug (microwave resistant) add the oil, egg, vanilla extract and milk. Mix well.
  2. Add in the vanilla protein powder. Combine well.
  3. Slowly add the flour with the baking powder. Mix and make sure there are no clumps.
  4. Add in the chocolate chips and take the mug cake to the microwave for 40 seconds. If the cake is not done add 20 more secs.

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