A quick and easy PB&J Protein Mug Cake for the perfect single serve dessert! This peanut butter and jelly protein mug cake is low fat, low carb, low sugar and gluten free too.

Inspiration for this recipe actually came from one of my Instagram followers. She tried my Peanut Butter Protein Mug Cake recipe with some strawberry jam.. So I had to make a protein peanut butter jelly mug cake.

A clean recipe here though since it uses jam with no sugar added!

Ingredients for PB&J Protein Mug Cake

This single serve fudgy pb&j 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 here.
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.
Or Peanut Butter (Recommendation: American Dream Nut Butt e r; They’re higher in protein too, and The link gives you a discount)
See alternatives section below.
Coconut Flour for a keto and low carb protein mug cake
Egg Whites for extra protein
Unsweetened Almond Milk
A bit of Vanilla Extract
Baking Powder

And then of course..

Jam! I used Raspberry Jam from Chia Smash; It’s got no sugars added.

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

Tips to make Fudgy Peanut Butter Jelly Protein Mug Cake

This fudgy flourless peanut butter jelly protein 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 pb&j 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 pb&j 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 Peanut Butter and Jelly Mug Cake

I recommend making this healthy low calorie peanut butter and jelly mug with protein powder and peanut butter powde 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 jelly protein powder mug cake for one:

Peanut Butter Powder: 4 tsp Peanut Butter, and also reduce the amount of milk to maybe 1½ Tbsp
I’d recommend American Dream Nut Butter since they’re higher in protein; The link gives you a discount)
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 PB&J Mug Cake Recipe

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

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

More Single Serving Protein Mug Cake Recipes

More Peanut Butter & Jelly Protein Recipes: