Protein Zucchini Mug Cake: 60-Second Microwave

A single-serving microwave cake that delivers protein and sneaks in vegetables in under two minutes. This mug cake combines oat flour, plant-based protein powder, and collagen peptides for a nutrient-dense dessert that satisfies sweet cravings without excess sugar. Shredded zucchini adds moisture and mild flavor while keeping calories moderate. The cake is tender and slightly crumbly with a light crumb structure. Perfect for fitness enthusiasts, meal-preppers, or anyone wanting a quick protein boost. Make it for weekday breakfasts, post-workout snacks, or simple desserts. This version emphasizes real protein sources and whole-grain flour instead of refined options, making it suitable for those tracking macros or following clean-eating approaches.
Ingredients
- 3 tablespoon oat flour
- 1 tablespoon plant-based protein powder, vanillawhey protein1:1proteindairyadds dairy
whey adds milk allergen; same mixing
- 1 tablespoon collagen peptides
- ½ teaspoon baking powder
- 3 tablespoon almond milk
- ½ tablespoon plain yogurt
- 3 tablespoon shredded zucchini, pat dry
- vanilla stevia(optional)
Instructions
- 1
Add all ingredients into a large mug and mix well
- 2
Microwave for 60 seconds
- 3
If the top is still wet, microwave for 10 more seconds
- 4
Let cool for a few minutes and enjoy
Tips
Pat zucchini dry before adding to prevent excess moisture that extends cooking time and creates a soggy texture. Use paper towels or a clean kitchen towel.
Watch microwave carefully after 60 seconds; mug cakes cook quickly and can overcook in seconds. Top should be set but moist, not dry or rubbery.
Mug size matters: use a large mug (at least 12 oz) to prevent overflow during microwaving. Let cool briefly to firm up the structure before eating.
Good to Know
Consume fresh. Refrigerate leftovers up to 2 days in an airtight container; microwave 15-20 seconds to warm.
Mix dry ingredients in a small container up to 5 days ahead. Add wet ingredients and zucchini immediately before microwaving.
Serve warm with a dollop of yogurt, fresh berries, or a drizzle of almond butter.
Common Mistakes
Skip mixing thoroughly to avoid lumps of baking powder or protein powder that create uneven texture.
Overload the mug to avoid overflow during microwaving; fill no more than two-thirds full.
Use wet zucchini to avoid soggy, dense cake; pat dry before adding.
Substitutions
Dairy-Free Swaps
whey adds milk allergen; same mixing
Gluten-Free Swaps
General Alternatives
slightly sweeter; texture identical
FAQ
Can I make this ahead and reheat it?
Yes. Store in an airtight container in the refrigerator up to 2 days. Microwave for 15-20 seconds until warm. Texture softens slightly with storage but remains moist.
What if I don't have collagen peptides?
Increase plant-based protein powder to 2 tablespoons for similar protein. Collagen adds elasticity, so the cake will be slightly more tender without it, but still satisfying.
Can I freeze zucchini mug cakes?
Not recommended. Microwaved cakes don't freeze well due to texture changes and moisture loss. Make fresh or refrigerate up to 2 days instead.