A quick, protein-packed snack that’s ready in about 2 minutes—yes, please! This 3-Ingredient Protein Mug Cake comes together fast and can be customized with a few simple additions. The result is a moist, satisfying cake that helps curb cravings without derailing your goals.
“My family loved this!” -Kristi
A Quick Look At The Recipe
- ⏲️ Ready In: About 2 minutes
- 👪 Serves: 1
- 🍽 Calories and Protein: ~214 kcal and ~26 g protein
- 📋 Main Ingredients: Banana, egg, and protein powder
- 📖 Dietary Notes: Naturally dairy-free and gluten-free; can be adapted for paleo
- ⭐ Why You’ll Love It: Fast, moist, and protein-rich—perfect as a snack or light dessert
Mug cake recipes are a great strategy when you want to satisfy a sweet tooth without overindulging. This simple 3-ingredient version is one of my go-to solutions: easy to make, easy to customize, and easy to enjoy. It pairs well with other quick protein snacks like 3-ingredient protein balls or a protein pancake bowl if you want more variety throughout the week.
💭 Why You’ll Love This Recipe
Simple: Only three main ingredients and about two minutes in the microwave.
Healthy: Naturally dairy-free and gluten-free; easy to make paleo.
Customizable: Add cocoa, nuts, or a drizzle to make it feel indulgent.
Ingredients and Substitutions
This recipe uses just three base ingredients: mashed banana, egg, and a scoop of protein powder. Simple swaps let you adapt the cake to different diets or tastes.
Banana-free option: Replace the banana with 1/4 cup dairy-free Greek-style yogurt. If your yogurt isn’t sweet, add a teaspoon of maple syrup or another sweetener. Using yogurt will raise the protein slightly and produces a slightly different texture.
To make it paleo: Choose a paleo-approved protein powder or replace the protein powder with high-quality collagen powder. Collagen will produce a slightly gooier texture and may need a touch more cooking time.
Flavor Variations
The base mug cake is versatile—try any of the following to change the flavor or texture:
Chocolate: Stir in a teaspoon of cacao or cocoa powder, or add a few chocolate chips for pockets of melted chocolate.
Toppings: A drizzle of nut butter, a spoonful of dairy-free whipped cream, or a dollop of dairy-free yogurt adds richness and moisture.
Drizzle: A small swirl of dairy-free caramel or a sugar-free chocolate glaze makes this feel like a dessert.
Texture: Add chopped nuts or a few sprinkles for crunch and visual appeal.
How To Make a 3-Ingredient Protein Mug Cake
Step 1: Mash the banana in a small bowl and whisk in the egg until smooth.
Step 2: Stir in the protein powder until no dry bits remain and the batter is even.
Step 3: Spoon the batter into a microwave-safe mug or ramekin. Top with chocolate chips or nuts if desired.
Step 4: Microwave on high for about 2 minutes. Let cool for a minute or two before eating.
Expert Tips To Make It
Use a microwave-safe mug or small ramekin. Cooking time will vary with mug size and microwave wattage—check in the final 30 seconds. Let the cake cool briefly before tasting, as it retains heat. Different protein powders absorb liquids differently, so the texture can vary; adjust time or add a teaspoon of milk if needed.
Vanilla or chocolate protein powder both work well and change the flavor profile. For fewer carbs, swap the banana for 1/4 cup vegan Greek-style yogurt to increase protein and decrease sugar.
3-Ingredient Protein Mug Cake FAQs
Mug cake is best fresh, but you can refrigerate leftovers in an airtight container for up to 48 hours. Reheat briefly until just warm; note the texture will be denser after storage.
Yes. A small ramekin often cooks more evenly and makes portioning easier.
Whey may work, but it can change texture because vegan powders often act like a flour. If using whey, monitor the batter and adjust cooking time as needed.
Use 1/2 mashed banana, 1 egg, and 1/4 cup vegan protein powder. Mix, microwave for 1–2 minutes, and enjoy.
More High-Protein Mug Cake Recipes
- Pumpkin Protein Mug Cake [Gluten Free]
- Protein Mug Brownie [Vegan]
- Chocolate Almond Flour Protein Mug Cake
- Apple Mug Cake [High Protein, No Egg]
If you try this 3-Ingredient Mug Cake or another recipe from the collection, please leave a star rating and a quick note about how it turned out—feedback helps improve the recipes.
3 Ingredient Protein Mug Cake
Shelby Stover
Equipment
- Small ramekin or microwave-safe mug
Ingredients
- ½ ripe banana, mashed
- 1 egg
- ¼ cup vegan protein powder
Instructions
- Mash the banana and whisk together with the egg in a small bowl.
- Stir in the protein powder until the batter is smooth and there are no dry spots.
- Transfer to a microwave-safe mug or ramekin and add toppings if desired.
- Microwave on high for about 2 minutes. Allow to cool for a minute before enjoying.
Notes
The riper the banana, the sweeter the cake. Watch cooking time closely—microwaves vary. Swap banana for 1/4 cup dairy-free Greek-style yogurt to reduce carbs and add extra protein.
Nutrition
