Baked Egg White & Spinach Muffins: A Light, Protein-Packed Breakfast on the Go
Fluffy, savory, and nutrient-rich, these Baked Egg White & Spinach Muffins are the perfect make-ahead breakfast or snack. They’re quick to prepare, full of clean protein, and easy to grab when you’re rushing out the door.

Egg muffins have become a modern breakfast staple, especially for those who want something wholesome without the hassle of cooking every morning.
This version highlights egg whites and spinach — a lean, protein-rich combo that’s light yet satisfying. Think of them as a healthier twist on mini quiches, minus the crust and extra calories.
Why You’ll Love This Recip
- ⏱️ Quick & Easy – Simple ingredients, ready in under 30 minutes.
- 💪 High-Protein & Low-Calorie – Egg whites keep it light while providing clean protein.
- 🥬 Nutritious & Flavorful – Spinach adds vitamins, minerals, and freshness.
- 🧑🍳 Customizable – Add cheese, peppers, mushrooms, or herbs to mix things up.
- 🥡 Meal Prep Friendly – Bake once, and you’ve got healthy breakfasts for the week.

Baked Egg White & Spinach Muffins
Ingredients
- 2 cups liquid egg whites or 12 egg whites, separated
- 1 cup fresh spinach chopped (or use thawed frozen spinach, squeezed dry)
- ½ cup bell pepper diced (any color)
- ¼ cup red onion finely chopped
- ¼ cup low-fat shredded cheese optional, adds flavor & creaminess
- 2 tbsp milk dairy or non-dairy, helps with fluffiness
- ½ tsp garlic powder
- ½ tsp salt adjust to taste
- ¼ tsp black pepper
- Optional Add-Ins:
- Mushrooms zucchini, or broccoli (chopped small)
- Feta cheese mozzarella, or goat cheese
- Fresh herbs like parsley basil, or chives
- A pinch of red pepper flakes for heat
Instructions
- Preheat the Oven:
- Heat oven to 350°F (175°C). Lightly grease a 12-cup muffin tin with cooking spray or line with silicone baking cups.
- Prep the Vegetables:
- Chop spinach, peppers, and onions into small pieces. (Tip: squeeze out excess moisture from spinach to prevent soggy muffins.)
- Mix the Base:
- In a large bowl, whisk together egg whites, milk, garlic powder, salt, and black pepper until frothy. This adds air for fluffier muffins.
- Assemble the Muffins:
- Divide spinach, peppers, onions, and cheese (if using) evenly among the muffin cups. Pour the egg white mixture over the top, filling each cup about ¾ full.
- Bake Until Set:
- Place the muffin tin in the oven and bake for 20–25 minutes, or until the muffins are puffed, set in the center, and lightly golden around the edges.
- Cool & Release:
- Allow muffins to cool for 5 minutes before gently loosening with a knife or spatula. They will deflate slightly as they cool — this is normal.
- Serve & Enjoy:
- Enjoy warm, or let them cool completely before storing for meal prep.
Pro Tips & Variations
- Make Them Cheesy – Mix in shredded cheddar, feta, or mozzarella for added flavor and creaminess.
- Veggie-Packed – Add mushrooms, zucchini, or broccoli for extra nutrients. Just make sure to sauté or squeeze out moisture first to avoid sogginess.
- Spice It Up – Add jalapeños, red pepper flakes, or a splash of hot sauce to the egg mixture for a kick.
- Protein Boost – Stir in diced turkey bacon, chicken sausage, or smoked salmon if you’re not keeping them vegetarian.
- Dairy-Free Option – Skip the cheese and use non-dairy milk.
- Storage & Reheating –
- Store cooled muffins in an airtight container in the fridge for up to 4 days.
- Freeze individually on a baking sheet, then store in a freezer bag for up to 2 months.
- Reheat in the microwave (30–45 seconds) or in the oven at 325°F (160°C) until warmed through.
Serving Suggestions
- Breakfast On-the-Go – Pair with a piece of whole grain toast or fruit for a balanced morning meal.
- Brunch Spread – Serve alongside avocado toast, fresh fruit, and coffee or tea.
- Meal Prep – Pack 2–3 muffins with a small salad or roasted veggies for a quick lunch.
- Snack Time – Enjoy one warm with a dollop of salsa, hot sauce, or hummus for a savory bite.
- Special Occasions – Perfect for holiday brunches, potlucks, or as part of a healthy breakfast buffet.
Frequently Asked Questions
Q: Can I make these ahead of time?
A: Yes! They’re perfect for meal prep. Bake them in advance, refrigerate, and reheat as needed.
Q: Can I freeze egg white muffins?
A: Absolutely. Freeze them individually, then transfer to a freezer bag. Reheat straight from frozen in the microwave or oven.
Q: Why did my muffins deflate after baking?
A: That’s normal! Egg whites puff while baking but settle as they cool. The texture stays light and fluffy.
Q: Can I use whole eggs instead of just egg whites?
A: Yes! Substitute 6–8 whole eggs for the 2 cups of egg whites for a richer flavor and texture.