Skip to Content

High Protein German Chocolate Mug Cake

Ready to have your mind blown? German chocolate was named after a person, Sam German, not the country. Fun fact, right? And oh yeah, this high protein German chocolate mug cake is going to blow your mind as well.

This cake is super tasty and filling. Normally that’s not the case with a higher fat recipe. Considering most of the fat comes from coconut and pecans, the mug cake has some volume to it as opposed to using an oil or liquid fat source.

High Protein German Chocolate Mug Cake Ingredients 

This mug cake has more ingredients than most on the blog, but that doesn’t mean it’s complicated. You’ll still have a cake ready for consumption in minutes.

First on the ingredient list are the usual suspects—protein powder and coconut flour.

Cooking with Protein Powder

You can use any protein powder for this protein mug cake, but I used a whey concentrate blend from Dymatize. Ultra lean powders like whey isolate have a tendency to get dry or tough in mug cakes. And plant-based powders can be a bit granular or dense. If your mug cake is tough or dry, adding more fat like melted chocolate, butter, coconut oil, or even a faux fat source like unsweetened apple sauce or pumpkin should fix it.

Normally I’d say it’s possible to substitute for coconut flour. In this case, however, coconut is a large part of this flavor profile and there’s more fat than usual. So I’d highly encourage you to stick with the coconut flour.

If you want to try a swap anyway, check out the instructions for my white chocolate macadamia nut protein mug cake.

A protein mug cake with 28 grams of protein and only 17 grams of carbs that rivals the infamous Subway white chocolate macadamia nut cookie.

Other Ingredients

Okay, beyond the protein powder and coconut flour you’ll only need a few things like coconut flakes and crushed pecans. These are pretty standard and can be found in the baking aisles at nearly every grocery store.

One ingredient that you might be unfamiliar with is the Walden Farms syrup. I love using it as a sticky sweetener in baked goods and for frostings or sweet sauces like for this German chocolate mug cake. You can use other sugar-free syrups, but the Walden Farms is calorie-free. So keep that in mind if you make a swap.

The recipe lists the frosting as optional, but I recommend using it. It’s very low calorie and adds a ton of moisture to the cake. Below you can see what the mug cake looks like flipped on a plate without frosting. Still delicious, but it just looks naked.

If you wanted to reduce calories, cut the entire recipe in half instead of omitting the frosting or additional pecans.

german chocolate mug cake without frosting

All right, that’s enough about the ingredients. Here’s the full recipe. Enjoy!

Yield: 1 Mug Cake

High Protein German Chocolate Mug Cake

high protein german chocolate mug cake

A high protein mug cake packed with coconut, pecans, and naturally, chocolate.

Prep Time 3 minutes
Cook Time 2 minutes
Total Time 5 minutes


Optional Frosting


  1. Add the baking chocolate and ¼ C (60 mL) milk to a small bowl and microwave for 30 seconds. Stir well.
  2. Mix the protein powder, coconut flour, coconut flakes, pecan pieces, and remaining milk (¼ C or 60mL) in a mug or bowl. (If you’d like the coconut flakes and nuts on top, add them at the end of mixing.)
  3. Add the melted chocolate and milk to the remaining ingredients and stir well.
  4. Microwave for 90-105 seconds, watching for overflow depending on the size of your mug or bowl. If the mug cake is close to overflowing, finish the remaining cook time in 5-second intervals.
  5. If you're going to use the frosting, mix the ingredients in a small mug or bowl while the cake cooks.
  6. If you're going to eat the cake straight from the mug or bowl you cooked it in, add the frosting directly on top. If you'd like to flip the cake out like you see in the photos, run a knife around the edges after the cake has cooled for a few minutes and flip it onto a plate.


  • Macros are for the cake only.
  • Macros for cake with optional frosting: 482 calories, 43g of protein, 25g of carbs, and 26g of fat
  • Macros for cake with optional frosting and additional 1 Tbsp (7g) pecans: 530 calories, 44g of protein, 26g of carbs, and 31g of fat
  • This is a large mug cake. So, you may want to cut the recipe in half or share with a friend to keep the calories under control. 


Nutrition Information



Serving Size

1 Mug Cake

Amount Per Serving Calories 358Total Fat 20gUnsaturated Fat 0gCarbohydrates 20gProtein 30g

If you make this German chocolate mug cake or any of the protein mug cakes on this blog, be sure to tag us on Instagram! And subscribe to the email list below if you’d like to be notified about new recipes and other happenings on the blog.

This German chocolate mug cake packs 30 grams of protein into a single cake with optional frosting and toppings that take the protein to 43 grams per cake.

Skip to Recipe