An extra fudgy Single Serve Protein Blondie – the perfect low carb and sugar free treat for one! Healthy single serving blondie uses protein powder, a bit of almond butter and has no flour, sugar or butter!

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This was a very last minute protein dessert – the cravings hit. A really amazing contraption here!

Half baked fudgy protein blondie goodness, that’s actually healthy!

Ingredients for Fudgy Single Serve Protein Blondie

This single serve protein blondie 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 blondie that’s also sugar free
I used HTLT Supps Vanilla Whey-Caesin here.
Quest Nutrition Vanilla Milkshake is another option.
Peanut Butter Powder, also known as Powdered Peanut Butter. I recommend Lakanto for a sugar free version (the code HAYLSKITCHEN gives you a discount). Or you could use the one from PbFit or PB2 too.
Coconut Flour for a low carb protein mug cake
Zero Calorie Brown Sugar Substitute: Brown Monkfruit 1:1 Sugar Substitute from Lakanto (code HAYLSKITCHEN for a discount here too).
Almond Butter for the blondie flavor.
I’d recommend American Dream Nut Butter Bundle up Blondie Almond Butter; Code HAYLSKITCHEN gives you a discount.
Egg Whites for extra protein
Unsweetened Almond Milk
A bit of Vanilla Extract
Baking Powder

And then optionally, White Chocolate Chips or Butterscotch Chips! I’d recommend the sugar free ones from Lily’s Sweets.

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

Tips to make Single Serving Protein Blondie Mug Cake

This single serving protein blondie 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 mug cake blondie 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 low calorie blondie 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 healthy blondie. 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 Protein Mug Blondie

I recommend making this healthy low calorie protein mug blondie with the whey caesin protein powder and other ingredients listed since it gives the best results.

If you need other options for the flours and such, here’s some alternatives for a healthy peanut butter protein powder mug cake for one:

Peanut Butter Powder: 2 teaspoon Almond Butter, and also reduce the amount of milk to maybe 2 Tbsp
I’d recommend American Dream Nut Butter Bundle up Blondie Almond Butter; Code HAYLSKITCHEN gives you a discount.
Coconut flour: Try using about 3 tablespoon of Almond Flour
Almond Butter: Hazelnut Butter, Cashew Butter or Tahini; I don’t recommend peanut butter since it has a very strong taste.
Zero Calorie Brown Sugar Substitute: Regular sugar or coconut sugar (this won’t be sugar free though, and also higher in calories)
Egg Whites: 3 tablespoon aquafaba (chickpea liquid). I haven’t given this a try yet though.
Almond Milk: Any other milk

A Simple Vegan Single Serve Protein Blondie Recipe

This fudgy single serve protein blondie recipe has no butter or milk and can easily be made Vegan using plant based protein powder and aquafaba (instead of egg whites)

More Single Serving Protein Mug Cake Recipes

More Protein Blondie Recipes: