Flourless Protein Brownie Mug Cake (Keto)

This flourless protein brownie mug cake is the ultimate treat for your diet. With no flour and no eggs, this 1 minute protein brownie is low calorie, keto and gluten-free.

A fudgy 25 g protein brownie in a mug with just 176 calories: spoons of heaven that will taste like dessert. You’ll never guess it’s also healthy and macro-friendly!

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Flourless brownie ingredients

This flourless protein brownie recipe is incredibly simple: you only need five basic ingredients – no flour, no eggs and no banana! Honestly, I’m pretty sure this keto protein brownie mug cake will become your new favorite dessert.

Here is a list of all ingredients that you should have to make this low calorie and high protein brownie in a mug:

• Greek yogurt: this recipe uses nonfat Greek yogurt, but you can replace with full-fat Greek Yogurt. For a vegan mug cake, use dairy-free Greek yogurt or coconut yogurt. 
• Protein powder: this flourless brownie mug cake recipe uses whey protein powder, but you can replace it with plant based protein powder or casein (with some adaptations, more on this later). In terms of flavor, I like vanilla but also chocolate or brownie will taste great.
• Granular sweetener: for a low calorie protein brownie in a mug, this recipe uses sugar-free and calorie-free granular sweetener (erythritol, to be precise). Feel free to replace with coconut sugar, brown sugar or any other granular sweetener of your choice.
• Cocoa powder: this flourless protein brownie mug cake is made with natural cocoa powder, free from added sugars.
• Water or milk: as it is only 1 tablespoon, you can make this recipe with either water or milk (also dairy-free if you wish).

Which protein powder for keto brownie mug cake?

This flourless protein brownie recipe uses whey protein powder. I find that whey is the best option for this dessert because it mixes very well without getting thick or forming lumps. If you want to make keto protein brownie mug cake with casein or vegan protein powder, instead, your recipe may require some more milk or water. All you have to do is adding more liquid to the brownie batter until it gets smooth. And if you mess up with too much water, adjust with more protein powder or cocoa powder.

In terms of flavor, I like preparing this flourless protein brownie mug cake with vanilla protein powder. But feel free to use your favorite flavor: chocolate, brownie, salted caramel, peanut butter or even unflavored. If you opt for unflavored protein powder, however, this recipe may require some more sweetener to fix the taste.

Dairy-free and vegan flourless brownie

Do you want to make this recipe but can’t eat dairy or follow a vegan diet? If it is the case, then keep on reading because I have good news for you! Making a vegan protein brownie mug cake with no flour is as simple as replacing the Greek yogurt with a thick plant based yogurt of your choice and substituting whey with vegan protein powder. Furthermore, make sure that you are utilizing water or nondairy milk instead of cow milk.

How to make protein brownie mug cake

In a microwave safe mug, stir the Greek yogurt with protein powder, cocoa powder, granular sweetener and water (or milk). Mix well, until all ingredients are combined and the brownie batter has become smooth – adding more water or milk if it is necessary. This depends on the type of protein powder that you use, as casein and vegan protein tend to absorb more liquid.

Once your keto flourless brownie batter is ready, optionally top with chocolate chips and microwave on high for 30 seconds to 1 minute. Or bake in hot oven at 180°C (350°F) for around 10 minutes, if you prefer. But make sure that you do not overcook or over-bake the brownie otherwise it will get dry!

Oven baked protein brownie in a mug

If you don’t have a microwave or prefer baking, you can easily make this flourless protein mug cake in the oven. For this, preheat the oven to 180ºC (360ºF) and, when hot, bake for about 10 minutes.

More protein brownie recipes

• Low calorie protein brownie skillet
• Flourless Greek yogurt brownies
• Healthy brownie mug cake
• 100 calorie chocolate cake

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4.44 from 90 votes

Flourless Protein Brownie Mug Cake

This flourless protein brownie mug cake is the ultimate treat for your diet. With no flour and no eggs, this 1 minute protein brownie is low calorie, keto and gluten-free.

Prep Time: 1 minute minute

Servings: 1 servings

Save this Recipe

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Ingredients 

1x2x3x

• ▢ 60 grams (1/4 cup) Greek yogurt
• ▢ 20 grams (1/4 cup) protein powder (whey, see notes*)
• ▢ 15 grams (1 1/2 tbsp) cocoa powder
• ▢ 1/2 to 1 tbsp granular sweetener (erythritol, to taste)
• ▢ 1/2 to 1 tbsp water or milk (see notes*)

Optional

• ▢ chocolate chips

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Instructions 

• In a microwave safe mug, stir the Greek yogurt with protein powder, cocoa powder, granular sweetener and water (or milk). Mix well, until all ingredients are combined and the brownie batter has become smooth – if necessary, add more water or milk (based on the protein powder used, see notes*). If you desire, top with chocolate chips.
• Microwave on high for 30 seconds to 1 minute, or bake in hot oven at 180°C (350°F) for around 10 minutes. Do not overcook or over-bake, otherwise the brownie will turn out dry.

Notes

u003cliu003eThis recipe uses whey protein powder. If you wish to make your flourless brownie with vegan protein powder or casein, the recipe may require more water or milk. In this case, adjust with more liquid until you get a smooth brownie batter.u003c/liu003eu003cliu003eNutritional values are calculated for a brownie mug cake prepared with calorie-free sweetener and without additional chocolate chips. u003c/liu003e

Nutrition

Calories: 176kcal | Carbohydrates: 5g | Protein: 25g | Fat: 5g

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