Chocolate Protein Mug Cake
This Chocolate Protein Mug Cake is about to become your go-to quick dessert. It’s rich, moist, and ready in just minutes, with 14 grams of protein and less than 200 calories, making it perfect for satisfying a chocolate craving without the guilt.
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A Note from Kim
A Protein Dessert That Actually Tastes Good
This protein mug cake is what I make when I want dessert now, not in an hour, and definitely not after a sink full of dishes. Everything mixes right in one mug, and in less than two minutes I’ve got a warm, chocolatey treat that tastes just like the classic mug cake everyone knows and loves. The best part? It packs in 14 grams of protein, uses just four ingredients, and you’d never guess it’s a high-protein dessert.
Whether it’s a late-night chocolate craving, a quick post-dinner treat, or even a cozy, chocolate-filled breakfast, this easy mug muffin always hits the spot. It’s rich and satisfying, with the protein boost of a protein shake in warm, cake form, totally indulgent without going over the top. It’s the kind of dessert you’ll want it on repeat.
With love (and lots of good eats), 
Thanks for sharing your recipe! Hands down, the best protein mug cakes I’ve ever tried.
— Amy
Ingredients to Grab
Below is a quick list of basic ingredients you will need to make this single serving mug cake recipe. Since it starts with a cake mix, there’s no need to measure out a bunch of separate dry ingredients like cocoa powder or almond flour, or add extra sweetener like maple syrup or white sugar. Full measurements are listed further down below in the recipe card.
- Boxed cake mix: I love using a chocolate cake mix, especially Betty Crocker Delights Super Moist Triple Chocolate Fudge or Betty Crocker Super Moist Devil’s Food, but any brand or flavor will work. You can even use a gluten-free cake mix to easily make this mug cake gluten-free.
- Chocolate whey protein powder: Boosts protein while keeping things chocolatey; vanilla-flavored whey or plant-based protein also works. My favorite brand to use is Jocko whey protein powder. I get this at H-E-B, but you can also order it on Amazon.
- Water: A small amount helps bring the batter together and creates the perfect cake-like consistency. You could also use unsweetened almond milk or another milk variety.
- Oil: Any neutral oil works, such as melted coconut oil, canola, or vegetable oil, to add moisture and richness. No egg required!
- Optional add-ins & toppings: Customize your mug cake with your favorite goodies: chocolate chips, white chocolate chips, sprinkles, berries, coconut, chopped nuts, or candy pieces. Finish it off with whipped cream, frosting, sprinkles, chocolate syrup, caramel, or other topping.
How to Make a Protein Mug Cake
If you’re craving something chocolatey but still want to keep it high protein, this protein powder mug cake is the perfect fix. It satisfies a serious sweet tooth with all the cozy, fudgy vibes of a brownie, just in single-serving dessert form. Let’s make it!
You’ll find the full printable instructions in the recipe card, but here’s a quick visual of the steps:
Step 1: Mix. Lightly spray an 11–12 ounce microwave-safe mug or small mixing bowl with cooking spray. Add the cake mix, chocolate protein powder, water, and oil, then stir until smooth and fully combined.
Step 2: Cook. Microwave on high for about 1 minute and 10 seconds to 1 minute and 30 seconds. Remove from the microwave and allow the mug to cool for a few minutes.
Step 3: Enjoy. Add frosting and sprinkles if desired, then dig in! It’s also delicious topped with a scoop of vanilla ice cream or a warm drizzle of peanut butter.
Kim’s Recipe Tips
- Choose the right mug: Use a microwave-safe mug or bowl that holds at least 8 ounces to prevent overflow or cracking.
- Mix gently: Stir just until the ingredients are combined. Overmixing can make the cake dense instead of soft and tender.
- Watch the cook time: Microwave power levels vary, so start with 1 minute and 10 seconds, then add a few seconds if needed. The center should look just set.
- Let it rest: The cake will be very hot at first. Let it cool for about 5 minutes to allow the texture to firm up slightly.
- No mug? No problem: A small porcelain ramekin, ceramic bowl, or glass prep bowl works just as well.
- Handle with care: The mug will be very hot after microwaving, so use an oven mitt or hot pad when removing it.
Frequently Asked Questions
Protein powder absorbs a lot of moisture, especially whey blends. Try adding an extra tablespoon of milk, a spoonful of yogurt, or slightly reducing the cook time. It’s better to undercook by 5–10 seconds than overcook.
Overcooking is usually the culprit. Protein sets quickly in the microwave, so even 10 extra seconds can result in a rubbery texture.
Whey-casein blends usually give the fluffiest texture. Pure whey can dry out quickly, and plant-based powders may need extra liquid. Different protein powders can yield different results, so you may need to tweak the liquid slightly. If using plant protein, add a little more milk or a teaspoon of oil. I use Jocko protein powder in the chocolate milkshake variety.
Yes, this recipe works in the oven, too. Prepare the batter as directed, then transfer it to an oven-safe ramekin or small dish. Bake at 350°F for about 10–12 minutes, or until the center is just set.
If your preference is to skip the protein powder, try my cake mix mug cake. It’s a very similar recipe but without the added protein.
More Popular Mug Cakes to Try
If you try this chocolate protein mug cake, let me know! Leave a comment and if you love it as much as I do, be sure to give it a five star ⭐️ rating! Also, tag @kimscravings on Instagram with a picture of your creation. Be sure to subscribe to our mailing list to receive more healthy delicious recipes straight to your inbox.
Chocolate Protein Mug Cake
Ingredients
- 3 tablespoons (25g) boxed chocolate cake mix*, any variety works great, including gluten-free
- 3 tablespoons (18g) chocolate whey protein powder, other varieties may work
- 4 tablespoons water
- 2 teaspoons melted coconut oil, avocado oil, canola oil or vegetable oil**
- Frosting and sprinkles, optional for topping
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Instructions
- Spray an 11 to 12-ounce microwave-safe mug or small bowl with cooking spray and then mix together 3 tablespoons (25g) boxed chocolate cake mix*, 3 tablespoons (18g) chocolate whey protein powder 4 tablespoons water and 2 teaspoons melted coconut oil, avocado oil, canola oil or vegetable oil** inside.
- Microwave on high for about 1 minute and 10 seconds to 1 minute and 30 seconds. Remove from microwave and allow mug to cool for a few minutes. Add frosting and sprinkles, if desired and enjoy!
Notes
Did you make this recipe?
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5 stars – Wow! I tried this with chocolate protein powder and a little almond butter drizzle, so rich and satisfying. Perfect for a quick, guilt-free treat!
Made this in under 5 minutes and it did NOT disappoint! Chocolatey, fudgy, and perfectly portioned for one. My new go-to mug cake.
Perfect! Definitely 5 stars!
Been using this recipe for years. I always love it!
Love this! I added a sprinkle of cocoa nibs on top for some crunch, flavor was incredible. Thanks for an easy, protein-packed treat.
This was amazing! I added a handful of frozen raspberries and it took the flavor to the next level. Super easy and still feels light!
Thanks for sharing your recipe! Hands down, the best protein mug cakes I’ve ever tried.
This turned out amazing! I drizzled a little almond butter on top and it felt like a decadent treat but without the guilt.
Yum! I wasn’t sure if my protein powder would work, but this recipe turned out so good. It was fudgy and chocolatey, and I’ll be making this often!
Just tried this recipe and wow! I added a tiny swirl of peanut butter and it turned into a little dessert masterpiece in a mug.
Perfect for a late-night craving! I didn’t have time for anything fancy, and this mug cake came through. Texture was spot-on, chocolate flavor was rich, love it.
Delicious and super fast! I made it with plant-based protein powder and it turned out perfectly moist. Will definitely make again.
This mug cake is honestly game-changing. Quick, simple, and actually tastes like dessert. Made my afternoon snack feel like a treat!
So easy to make and so good. I threw in some mini chocolate chips, and it felt like a warm brownie in a mug. Definitely keeping this recipe handy.
I’ve made a lot of protein mug cakes, but this one is next level. Dense, chocolatey, and ready in minutes. I could eat this every day!
Super simple and incredibly satisfying. Fudgy, chocolatey, and hits the sweet spot without being too heavy. Already planning my next one!
Perfect for a late-night snack! The texture was just right and the chocolate flavor hit all the cravings. Quick, easy, and so satisfying.
Unexpectedly delicious. I added a pinch of cinnamon for fun, and it was like a little chocolate hug in a mug. So satisfying.
I wasn’t expecting it to be this moist! Used chocolate vegan protein and a splash of almond milk. It was perfect!
Absolutely loved this! I tried folding in some frozen raspberries and it added the perfect tart contrast to the chocolate.
I made this in the microwave and loved it! How would you do this in the oven? My microwave sadly isn’t working. How long do you think it would need to bake?
I haven’t actually tried it in the oven, but based on some other chocolate mug cakes I found, I would bake at 350ºF. for about 14 minutes. Let us know how it works out for you!
Actually love this recipe so much! I make it at least once a week!
Eating this now. Delicious! I added some chocolate chips. I’ve been looking for a healthier protein dessert and this delivers!
I tried this mug cake this evening. I’ve never made one before, but I do know some baking fundamentals. I added a bit of cocoa since the protein powder I have is cookies and cream flavor. Also added a touch of unsweetened almond milk and 1 tablespoon of flour since I over did the milk (being a typical man I avoid measuring instruments often ending badly)
The end result was amazing! The banana provided an odd, but very well suited flavor. It’s packed with protein as an added bonus. My version was closer to 400 cal, but I did miss supper so I don’t feel that bad. The addition of crushed walnuts or almonds would make a great flavor and texture addition sacrificing a few more cal into the mix.
1 mug cake based on this recipe would be 3 nice smaller portions. Definitely keeping this recipe!
Love your variations and I’m so glad you enjoyed!
So good! Loved this!
This was easy to make and delicious, thank you for the recipe. I will definitely make this often!
So happy you enjoyed!