This Protein Chocolate Brownie Mug Cake is rich, fudgy, and ready in just 1 minute. Packed with 32 grams protein and simple ingredients, it's the perfect quick dessert or snack when chocolate cravings hit.
Microwave it for speed or bake it in the oven for a traditional texture. Either way, it's moist, satisfying, and easy to customize with your favorite add-ins. If you want to boost your protein even more, try topping it with my protein whipped cream!
Time to make this rich, high-protein chocolate brownie mug cake-here's the simple step-by-step:

Ingredients
Dry Ingredients
- ¼ cup (30g) chocolate protein powder
- 1 tablespoon all-purpose or oat flour
- 1 tablespoon sugar or sweetener of choice
- 1 tablespoon cocoa powder
- ½ teaspoon baking powder
- A pinch of salt
- 1 ½ tablespoon chocolate chips (optional)
Wet Ingredients
- 3 tablespoon thick Greek yogurt (egg-free recipe)
- 3 tablespoon milk or any milk alternative
- 1 teaspoon olive oil or coconut oil
- ½ teaspoon vanilla extract
Optional Add-Ins
- White chocolate chips or cocoa nibs
- Mini marshmallows
- Peanut butter, almond butter, or other nut butters
- Espresso or instant coffee powder (¼-½ tsp)
- Toffee bits or caramel chips

How to Make Protein Chocolate Brownie Mug Cake
Microwave Method (Quick & Easy):
- Mix all dry ingredients in a mug.
- Stir in wet ingredients until smooth.
- Microwave for 60 seconds. If not set, continue in 10-second bursts (up to 90 sec).
- Cool for 1-2 minutes and enjoy warm.
Oven Method (Optional):
- Preheat oven to 350°F (175°C).
- Mix everything in an oven-safe ramekin.
- Bake for 10 minutes, or until set.

If you enjoyed this Protein Chocolate Brownie Mug Cake, you might also like my High Calorie High Protein Chocolate Peanut Butter Smoothie for a creamy protein boost, or my Protein Coffee (Proffee Recipe) to start your day with a delicious, energizing drink. Both are easy, tasty ways to get more protein and keep things fun.
📖 Recipe

Protein Chocolate Brownie Mug Cake
Ingredients
Dry Ingredients
- ¼ Cup Chocolate Protein Powder 30 grams (whey, casein, or plant-based)
- 1 Tablespoon All-Purpose Flour
- 1 Tablespoon Sugar or sweetener of choice
- 1 Tablespoon Cocoa Powder
- ½ Teaspoon Baking Powder
- Pinch of Salt
- 1.5 Tablespoons Chocolate Chips (Optional)
Wet Ingredients
- 3 Tablespoons Plain Greek Yogurt
- 3 Tablespoons Milk
- 1 Teaspoon Olive Oil (or Coconut Oil)
- ½ Teaspoon Vanilla Extract
Instructions
1-Minute Microwave Instructions
- Mix all dry ingredients in a mug.
- Stir in wet ingredients until smooth.
- Microwave for 60 seconds. If not set, continue in 10-secondbursts (up to 90 sec).
- Let it rest for 1-2 minutes and enjoy warm.
Oven-Baked Protein Brownie Instructions
- Preheat oven to 350°F (175°C).
- Mix all ingredients in a small oven-safe dish or ramekin.
- Bake for 10 minutes, or until set.
Notes
Optional Add-Ins:
- White chocolate chips or cocoa nibs
- Mini marshmallows
- Peanut butter, almond butter, or other nut butters
- Espresso or instant coffee powder (¼-½ tsp)
- Toffee bits or caramel chips
Nutrition
Nutritional Disclaimer
The nutritional information provided here is approximate and calculated using an online nutritional calculator. We strive to give you accurate information, but many factors can cause this data to vary widely. For more information, please read our full Nutritional Disclaimer.
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Andi says
How large is your scoop for the protewin powder? Some of my protwein powders use a smaller scoop - 2 scoops for a 30g serving and some use a single scoop.
Thanks!
Jessica says
Hey Andi, I used 1 scoop (25g) of protein powder. If your scoops weigh more than 25g, you could try adding an additional 1 tablespoon of milk to the batter. Let me know if you have any more questions!
Scarlet says
This brownie mug cake was so rich and yummy. Totally satisfying. I loved it.
Jessica says
I'm so glad you loved it!
Aimee Mars says
This looks great and I love how it's in a mug! I'm going to experiment with some of your substitution ideas. I might try it with Tigernut flour instead of oat flower and use your dairy-free suggestions.
Jessica says
Thank you so much!
Toni says
I love how quick and easy this is to make!! Everyone loved it!
Jessica says
Thanks, Toni!
Gina says
The microwave version has become my new to-go for a quick chocolate fix after dinner. So easy and delicious!
Jessica says
So happy to hear you love it!
Dannii says
I love mug cakes for a quick and easy chocolate fix and this protein packed version looks great.
Jessica says
Thanks so much, Dannii!
Claudia Lamascolo says
Wow this looks fantastic I love the ease of this recipe and this will be in my mug soon!
Jessica says
So happy to hear!