A pretty and pretty Fudgy Cinnamon Protein Mug Cake complete with a swirl and icing. This healthy cinnamon roll protein mug cake uses protein powder, and has no flour or sugar – an easy and keto friendly dessert!

My previous half baked protein mug cake – a peanut butter flavor got quite some love on Instagram because of that fudginess.

Turned out the fudgy protein mug cake is a favorite not just for me.

So did a little poll and went for this cinnamon flavored low calorie and keto and low carb and flourless protein mug cake.

Ingredients for Fudgy Cinnamon Protein Mug Cake

This single serve fudgy cinnamon protein mug cake is made with a few simple and healthy ingredients, and has no flour, butter or oil and no sugar either!

Vanilla Protein Powder for healthy, whey protein protein mug cake that’s also sugar free
I used Quest Nutrition Vanilla Milkshake protein powder for this mug cake.
ProteinWorld Whey and ProteinWorld Slender Blend are also great options. Code HAYLSKITCHEN gets you a discount on both.
Coconut Flour for a low carb protein mug cake
Egg Whites for extra protein
Unsweetened Almond Milk
Cinnamon
Baking Powder

If you need to add more sweetness, Stevia Powder or Zero Calorie Sugar Substitute; I use Lakanto, to keep keto cinnamon mug cake sugar free; (code HAYLSKITCHEN for a discount here too)

And for the Healthy Cinnamon Roll Swirl

Almond Butter
Cinnamon
Stevia Powder or other Sweetener

And then the Cream Cheese Icing:

Reduced Fat Cream Cheese, which might also be called Neufchâtel, for a low fat and low calorie recipe
Almond Milk
More Stevia Powder or other Sweetener

Tips to make Fudgy Cinnamon Protein Powder Mug Cake with No Flour

This fudgy flourless cinnamon protein powder mug cake really is a simple one and made in a mug or ramekin, but make sure you do all of this stuff to get is perfect.

Grease the ramekin! You want the cinnamon bun mug cake to come off easily.
Use an oven-safe mug if you need.

Don’t over-mix the batter!
Make sure you gently stir the wet and dry to combine them.
If you over-mix it, protein powder will make your protein mug cake tough, dense and gummy.

Taste the batter and see if you need some extra sweetener. I’d recommend using stevia powder to maintain the consistency of the batter.

Don’t overbake the mug cake. The top will should be just cooked. It might look soft, but will harden when it cools a bit.
It will continue to cook when out, and you want the proper fudgy center.

Alternates for this Healthy Cinnamon Roll Mug Cake

I recommend making this low calorie, healthy and keto cinnamon roll mug cake with the protein powder and ingredients listed since it gives the best results.

If you need other options, here’s some alternatives for a healthy cinnamon mug cake for one:

Coconut flour: Try using about 3 Tbsp of Almond Flour
Egg Whites: 2 Tbsp aquafaba (chickpea liquid). I haven’t given this a try yet though.
Almond Milk: Any other milk

A Simple Vegan Cinnamon Bun Mug Cake Recipe

This fudgy cinnamon protein mug cake recipe has no butter or milk and can easily be made Vegan too.

For the perfect Vegan protein fudge mug cake, make sure you use a plant based protein powder and aquafaba.

ProteinWorld has a Vegan protein blend that would work well in this cinnamon mug (HAYLSKITCHEN for the discount here too).

More Single Serve Protein Cinnamon Roll Recipes:

More Single Serving Protein Mug Cake Recipes