A rich half-baked Single Serve Protein Brownie with fudgy sides and a gooey center! This single serving brownie uses protein powder and egg whites for 29 grams of protein with no sugar, butter, oil or flour.

Okay you guys, I was actually going for a flourless protein brownie here, but ended up with this contraption. I accidentally underbaked it and got mad, but as soon as I broke into it, I knew it was pure magic.
Come on-a half baked protein brownie with that rich fudginess and luscious, gooey center? It is unbelievable!
If you are looking for the ultimate protein brownie for one, this is it. It's a single serve protein brownie recipe that tastes like a decadent dessert but has the macros of a post-workout snack. Whether you make it in a ramekin or treat it as a protein mug brownie, this single serve treat is about to become your new obsession.
Why You Will Love This Recipe
- Satisfy Your Cravings: This single-serving dessert the ultimate fix for when you need a rich, chocolatey dessert asap.
- Simple Ingredients: A healthy dessert with pantry staples like protein powder, cocoa powder, and egg whites!
- Intense Chocolate Flavor: Packed with cocoa powder and chocolate protein, this high protein fudge brownies recipe delivers a deep, satisfying chocolate hit.
- Healthier Way to Indulge: Wihout the white sugar, butter and oil, this solo brownie fits your macros perfectly.
- Low Carb: Since we don't use flour or sugar, this brownie is great if you're cutting carbs but have a sweet tooth!
Ingredients for Single Serve Protein Brownie
This single serve protein fudge brownie is made with a few simple and healthy ingredients, and has no butter or oil and no sugar either!
- Chocolate Protein Powder: This is essential for a high protein fudge brownie that is also sugar-free. I highly recommend Quest Nutrition (whey-casein blend) because it bakes perfectly without drying out.
- Sub: You can use Vanilla protein powder, but the chocolate flavor won't be as intense.
- For dairy free: Try KOS plant-based protein, but add some stevia sweetener.
- Unsweetened Cocoa Powder: Or Cacao powder for that deep chocolate richness.
- Coconut Flour: Essential for the texture!
- Sub: You can try using about 3 times the amount of Almond Flour, but coconut flour is best for absorption here.
- Egg Whites: For extra protein and binding.
- Sub: For a vegan single-serving protein brownie, use 2 tablespoon aquafaba (chickpea liquid).
- Unsweetened Almond Milk: To bring the batter together.
- Sub: Any other milk (dairy or non-dairy) works fine.
- Vanilla Extract: For flavor.
- Baking Powder: To give it a little lift.
Optionally: Chopped Chocolate or Chocolate Chips! I recommend Lily's dark chocolate chips or milk chocolate chips.
For more sweetness, add in Stevia Powder or Zero Calorie Sugar Substitute (like Lakanto).

I nstructions: How to Make a Half Baked Protein Fudge Brownie Recipe
Making this protein brownie in a mug (or ramekin!) is super fast.
- Prep: Preheat your oven to 350°F and grease a small ramekin or oven-safe mug. This ensures the brownie comes off easily!
- Mix Dry Ingredients: In a small bowl, combine the chocolate protein powder, cocoa powder, coconut flour, and baking powder.
- Add Wet Ingredients: Add the egg whites, almond milk, and vanilla extract.
- Mix Gently: Fold the wet into the dry just until combined. Do not over-mix!
- Add Mix-ins: Fold in your chocolate chips or chopped chocolate.
- Bake: Transfer the batter to the prepared ramekin. Bake for 10-12 minutes.
- Note: You want the center to be slightly underdone for that half baked protein brownie texture.
- Cool (Slightly): Let it sit for a minute or two, then dig in while it's warm and gooey!
Tips for the Perfect Protein Brownie for One
This chocolate fudge half baked protein brownie really is easy, but make sure you follow these tips to get it perfect:
- Don't Overbake: This is crucial! The top should be just cooked. It might look soft, but it will harden slightly when it cools. It continues to cook when you take it out, and you want that proper protein fudge brownie recipe center.
- Grease the ramekin! You want the brownie to come off easily.
Use an oven-safe mug if you need. - Don't Over-Mix: Make sure you gently fold the dry mix into the wet to combine them. If you over-mix it, the protein powder will make your protein single serve brownie tough, dense, and gummy.
- Taste the Batter: Before baking, give the batter a tiny taste. If you need it sweeter, add a little stevia powder or sweetener of choice.

Storage for Single Serving Protein Brownie
- Eat Immediately: Since this is a protein brownie single serving recipe, it is best eaten warm and fresh right out of the oven!
- Fridge: If you really want to save it, you can cover it and store it in the fridge for up to 5 days, but honestly, it's too good to save, haha!

More High Protein Chocolate Dessert Recipes:
- Single Serve Chocolate Protein Donut
- Solo Chocolate Protein Muffin
- Chocolate Lava Protein Cookie
- Air Fryer Protein Lava Cake

Half Baked Protein Fudge Brownie for One - Very Rich!
Ingredients
- ⅓ cup Chocolate Protein Powder (Whey-casein), 30g
- 2 tablespoon Unsweetened Cocoa Powder, 10g
- 1 tablespoon Coconut Flour, 7g
- ½ teaspoon Baking Powder
- 3 tablespoon Unsweetened Almond Milk, 45ml
- 1½ Liquid Egg White, 45g, 3 Tbsp
- ¼ teaspoon Vanilla Extract
Optional:
- Stevia Powder/ Zero Calorie 1:1 Monkfruit Sugar Replacement (to taste)
- Sugar free Chopped Chocolate or Chocolate Chips
Are you Making This?
Please leave a ⭐⭐⭐⭐⭐ comment below letting me know what you think! This supports my page so I can continue to give you free recipes. Even 1 sentence is enough 🙂
Instructions
- Preheat oven to 350°F and lightly grease a 1 cup ramekin.
- In a bowl, whisk chocolate protein powder, cocoa powder, coconut flour and baking powder.
- Add almond milk, egg white and vanilla, and stir until combined. Batter should be smooth.Taste batter and add sweetener if needed.
- Pour batter into ramekin and top with chopped chocolate.
- Bake for 12-14 minutes. Top should be mostly set, but still slightly wobbly. It will harden when cool.Let cool for a few minutes and enjoy!
Notes
- Taste the batter and see if you need some extra sweetener; I'd recommend stevia if needed.
- Nutrition value is calculated using products recommended below.
- See post for alternate ingredients, tips and storage options.
- Quest Nutrition Chocolate Milkshake Protein Powder
- KOS Plant Chocolate Protein Powder
- Servings: 1 brownie | Serving size: 1
- Calories: 212 cal
- Fat: 5.6g | Saturated fat: 3.2g
- Carbohydrates: 16.8g | Fiber: 9g | Sugar: 3g
- Protein: 29g






Sissel Pedersen says
Honestly the five stars say it all. Absolutely Devine😍
Haylee Jane Monteiro says
Oh thank you so much Sissel! It's the fudgy part that always gets me too!
Rachel Farrell says
So delicious!
Haylee Jane Monteiro says
This brownie is definitely one of my favs! So glad you enjoyed!
Jevay Aggarwal says
"Oh man" literal first words as I dug my spoon in that gooey center and took a bite. May or may not have eaten the sides first and saved the center for the last after that initial bite ??
Haylee Jane Monteiro says
That may or may not have been my reaction as well 🙂 And hell yes to saving that gooey center for the last bite. It really was my favorite part too.
Kaci Cheeseman says
I’m going to try this ASAP!! I love a gooey brownie!
Haylee Jane Monteiro says
Gooey brownies really can't be beat. Looking forward to knowing what you think!