Chocolate Protein Mug Cake Recipe

This Chocolate Protein Mug Cake is a rich, fudgy, single-serve treat made in just minutes using simple, high-protein ingredients. It’s perfect when I’m craving something chocolatey and satisfying without the sugar crash—ready in the microwave and ideal for a post-workout snack or healthy dessert.

Why You’ll Love This Recipe

I love this recipe because it hits the sweet spot between indulgent and nourishing. It’s packed with protein, comes together in one mug, and satisfies my chocolate cravings with a soft, cakey texture. Plus, it’s portion-controlled, quick, and completely customizable based on my protein powder or dietary needs.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

  • Chocolate protein powder

  • Cocoa powder

  • Baking powder

  • Milk (dairy or non-dairy)

  • Egg (or flax egg for vegan)

  • Maple syrup, honey, or sweetener of choice

  • Optional: chocolate chips, nut butter, Greek yogurt, or vanilla extract

Directions

  1. In a microwave-safe mug, I whisk together the protein powder, cocoa powder, and baking powder.

  2. I add the egg, milk, and sweetener, then stir until smooth and well combined.

  3. I mix in any optional add-ins like chocolate chips or a spoonful of nut butter.

  4. I microwave the mug cake on high for 60–90 seconds, depending on my microwave’s power.

  5. I let it cool slightly before enjoying straight from the mug—or topping with yogurt or fruit.

Servings and timing

This recipe makes 1 serving and takes just 5 minutes total from start to finish.

Variations

  • I sometimes use vanilla protein powder and add extra cocoa for a brownie-like taste.

  • Swapping the egg for mashed banana makes it egg-free and adds natural sweetness.

  • A spoonful of peanut butter in the center creates a gooey core.

  • I’ve added instant coffee or espresso powder for a mocha flavor boost.

Storage/Reheating

Since it’s a single-serve recipe, I usually eat it fresh. But if I make a batch ahead, I store it in the fridge (covered) for a day and reheat it in the microwave for about 20–30 seconds. It’s best enjoyed warm.

FAQs

What kind of protein powder should I use?

I use a whey or plant-based chocolate protein powder—either works well as long as it blends smoothly into batter.

Can I make it vegan?

Yes, I use a flax egg or mashed banana and plant-based milk, plus a dairy-free protein powder.

Why is my mug cake rubbery?

Overcooking can cause that. I microwave it in short bursts and stop once the center is just set for a softer texture.

Can I bake this instead of microwaving?

Yes, I bake it in an oven-safe ramekin at 350°F (175°C) for about 12–15 minutes.

Is it really filling?

It definitely is for me! The protein and optional toppings like nut butter or yogurt make it a satisfying snack or light meal.

Conclusion

This Chocolate Protein Mug Cake is a quick, delicious way to enjoy a chocolate fix while hitting my nutrition goals. It’s warm, gooey, and packed with protein—all made in just minutes with ingredients I usually have on hand. Whether I need a speedy dessert or a healthy post-workout treat, this mug cake always comes through.

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Chocolate Protein Mug Cake Recipe

Chocolate Protein Mug Cake Recipe

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  • Author: Linda
  • Prep Time: 3 minutes
  • Cook Time: 1–2 minutes
  • Total Time: 5 minutes
  • Yield: 1 serving
  • Category: Snack, Dessert
  • Method: Microwave
  • Cuisine: American
  • Diet: Gluten Free

Description

This Chocolate Protein Mug Cake is a quick, high-protein dessert you can make in minutes using simple, wholesome ingredients. It’s the perfect single-serve, microwave-friendly treat for curbing chocolate cravings without derailing your nutrition goals.


Ingredients

  • 1 scoop chocolate protein powder (whey or plant-based)
  • 1 tbsp unsweetened cocoa powder
  • ¼ tsp baking powder
  • 1 egg (or flax egg for vegan option)
  • 3 tbsp milk (dairy or plant-based)
  • 1 tbsp maple syrup, honey, or sweetener of choice
  • Optional Add-ins:
  • 1 tbsp chocolate chips
  • 1 tsp nut butter (e.g. almond or peanut butter)
  • ¼ tsp vanilla extract
  • Greek yogurt or fresh fruit for topping

Instructions

  1. In a microwave-safe mug, whisk together the protein powder, cocoa powder, and baking powder.

  2. Add the egg, milk, and sweetener. Stir until fully combined into a smooth batter.

  3. Fold in any optional add-ins like chocolate chips or nut butter.

  4. Microwave on high for 60–90 seconds, checking after 60 seconds for doneness (center should be just set).

  5. Let cool slightly. Enjoy straight from the mug or top with yogurt, fruit, or more nut butter.


Notes

  • Microwaves vary—start with 60 seconds and increase in 10-second increments to avoid overcooking.
  • For a gooey center, undercook slightly or add a spoonful of nut butter to the middle before microwaving.
  • Flax egg = 1 tbsp ground flaxseed + 2.5 tbsp water, mixed and rested for 5 minutes.

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