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When a chocolate craving strikes, this Protein Mug Cake comes together in just minutes. Made with simple pantry ingredients, it’s a quick single-serve dessert that’s soft, rich, and packed with protein. Everything mixes directly in one mug and cooks in the microwave, making it perfect for an easy afternoon snack, post-workout treat, or healthier dessert.
And, it’s so good! Meet your protein goals while getting a sweet snack that doesn’t break the calorie bank, and isn’t too high in sugar. It’s one serving, but I like sharing these with my husband, so we actually get two servings out of it.
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How to make
This Healthy Protein Mug Cake is a quick solution when you’re craving dessert but don’t want to bake an entire cake. Made with oat flour, chocolate protein powder, and cocoa, it delivers rich chocolate flavor while adding extra protein.
The complete Single Serve Protein Cake recipe is in the recipe card below, but I have tips and tricks for you here in the post.
Use a Large Mug. Choose a 10-12 ounce mug to give the cake room to rise without overflowing.
Use your favorite milk here, plant based or dairy. I like oatmilk in most things right now, but almond, soy, and dairy will all work.
You’ll find I used maple syrup in my mug cake; it’s got a lower glycemic index than many other sugars, and has a great flavor. Feel free to experiment with your favorite like stevia, monk fruit, or coconut sugar.
Protein powders vary greatly in texture and absorbency. Whey protein typically produces a softer cake, while many plant-based protein powders create a denser texture. If your batter seems dry or thick before microwaving, simply stir in an additional teaspoon or two of milk.
Because microwave wattage varies, cooking times can differ. The cake is done when the top appears set and springs back lightly when touched. Avoid overcooking, as mug cakes can become dry very quickly.
The cake continues cooking slightly after microwaving. Remove it when the center still looks slightly soft. And, if you’re like me, you might want to undercook it a little so it’s softer and gooey; since there’s no egg there’s no need to worry if it’s a little raw.
Allow the mug cake to cool for 1 minute before eating for the best texture.
Serve the Microwave Protein Cake with nut butter, whipped cream, more chocolate chunks, fresh berries, or a small scoop of vanilla ice cream.
Pro tip: mix the dry ingredients together and store in a small ziptop bag, that way they’re ready to be mixed into the wet ingredients at a moments notice!
Variations
- Use vanilla protein powder and add mini chocolate chips.
- Add 1 tablespoon peanut butter to the center before cooking.
- Stir in a pinch of cinnamon or espresso powder.
- Use your favorite milk: dairy milk, soy milk, almond milk will all work.
- Top with flaky sea salt
Check out my great listing of some High Protein Desserts.
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Recipe
Protein Mug Cake
Equipment
- 10-12 ounce microwave-safe mug or ramekin
Ingredients
- 3 tablespoons oat flour
- 2 tablespoons chocolate protein powder
- 1 tablespoon unsweetened cacao powder
- ½ teaspoon baking powder
- pinch of sea salt
- 1 ½ teaspoons maple syrup
- ¼ cup unsweetened milk your choice plant based or dairy
- 2 tablespoons chocolate chunks divided use
Instructions
- Use a 10- to 12-ounce microwave-safe mug or ramekin to allow room for the cake to rise while cooking. Add the oat flour, chocolate protein powder, cacao powder, baking powder, and salt, and whisk until evenly combined.
- Add the maple syrup, oat milk, and half of the chocolate chunks. Stir until a smooth batter forms. Sprinkle the remaining chocolate chunks over the top.
- Microwave on High for 60 seconds.
- Continue cooking in 10-second intervals until the cake is puffed and the top looks set but still slightly soft in the center. Total cook time is usually 80 to 90 seconds depending on your microwave.
- Allow the mug cake to cool for 1 minute before serving.
- Top with whipped cream, nut butter, or a small scoop of ice cream if desired.
Video
Notes
• If the batter seems very thick, add 1 to 2 teaspoons additional oat milk.
• Use a large mug to prevent overflow during cooking.
• Microwave times vary; start checking after 60 seconds.
Nutrition
Nutritional information is based on third-party calculations, and should be considered estimates. Actual nutritional content will vary based on brands used, measuring methods, portion sizes, and more.
Debi
Super easy and so good. It’s a great way to have a sweet treat that you can feel good about. Even my husband loved it! I hope you do too.
Debi, author, Life Currents