Actually the best single serve Protein Cosmic Brownie that’s low fat, low sugar and made in the microwave! Healthy cosmic brownie uses protein powder and egg whites for 31.6g protein each.

I think I’ve made this single serve protein cosmic brownies at least 4 times now in one week now. It really is so rich and so good, and that just makes it so hard to resist!

I mean, come on. A rich chocolatey brownie with chocolate frosting and those candy coated chocolate chips, but still low sugar and low fat? AND you don’t have to share with anyone? Dessert doesn’t get more perfect!

Ingredients for Protein Cosmic Brownie for One Recipe

This single serving protein cosmic brownie is made with a few simple and healthy ingredients you probably have in your pantry.

Chocolate Protein Powder for high protein brownie that’s also low sugar.
I used Quest Chocolate Milkshake flavor since its whey-casein and bakes well.
Unsweetened Cocoa Powder or Cacao Powder
Coconut Flour
An Egg White
Unsweetened Almond Milk
A bit of Vanilla Extract
Baking Powder

And then for the frosting on this healthy cosmic brownie with sprinkles:

More Whey-casein Chocolate Protein Powder: Quest Chocolate Milkshake flavor again here
Non-fat plain Greek Yogurt
Unsweetened Cocoa Powder
Unsweetened Almond Milk
Candy Coated Chocolate Chips – These are the cosmic brownie sprinkles you need! Here’s the ones I used from Amazon

Tips to make Protein Powder Cosmic Brownie

This microwave cosmic brownie with protein powder is super easy to make, but here’s some pointers to get it perfect.

Grease the dish so the microwave cosmic brownie comes out perfectly well.

Use room temperature egg whites and milk;
This is so the wet ingredients and dry ingredients can mix well.

Don’t over-mix the batter!
Make sure you gently fold the dry mix into the wet to combine them.
If you over-mix it, protein powder will make your single serving protein cosmic brownie 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.

Center of brownie will be slightly soft on top, but will cook while cooling.

Let single serve cosmic brownie cool before frosting or the frosting will all melt.

Don’t add too much milk in this low calorie cosmic brownie frosting; It will come together, just continue to mix. Too much and it will be too runny.

Can you store Single serving Low Calorie Cosmic Brownie?

Since this recipe makes a single serve cosmic brownie, you’re probably going to finish it all in one go. Just in case you want to make it last though, store this low calorie cosmic brownie in an airtight container in the fridge for up to 3 days.

Alternates for this Healthy Cosmic Brownie for One

I recommend making recipe with the ingredients and products listed – especially the since it gives the best results – but here’s osme options for a healthy cosmic brownie for one:

Coconut Flour: Use 3-4 Tbsp Oat flour or Almond Flour.
Chocolate Protein Powder: Use vanilla.
Almond Milk: Any other milk
Egg Whites: 3 Tbsp aquafaba (chickpea liquid). I haven’t given this a try yet though
Greek Yogurt: Coconut Yogurt

More Microwave Protein Dessert recipes you’ll love:

More Single Serving Protein Brownie Recipes: