Egg White Muffins with Veggies are simple, clean, and easy to make on a Sunday, so weekday mornings feel a little less… chaotic. Expect a light, fluffy bite that’s packed with color from sautéed vegetables, gentle seasoning, and the option to add a little cheese if you like. They’re make-ahead friendly, freezer friendly, and surprisingly satisfying for something you can eat with one hand.

Ingredients for this Egg White Muffins with Veggies

2 cups liquid egg whites, or 12 large egg whites
1 cup baby spinach, finely chopped
1/2 red bell pepper, small dice
1/2 small yellow onion, small dice
1/2 cup mushrooms, chopped
1/2 cup cherry tomatoes, halved, optional
1/3 cup shredded cheese, optional, cheddar or feta work well
2 tablespoons chopped fresh parsley or chives
1/2 teaspoon fine salt, or to taste
1/4 teaspoon black pepper
1/4 teaspoon garlic powder
1/4 teaspoon smoked paprika, optional
Oil or cooking spray for the muffin tin

Instructions

Preheat the oven to 350°F, 175°C. Grease a 12-cup muffin tin well, or use silicone liners. Really get into the corners so nothing sticks.
Warm a nonstick skillet over medium heat with a small splash of oil. Sauté the onion, bell pepper, and mushrooms for 3 to 4 minutes until they soften and release some moisture. Stir in the spinach just until wilted, 30 seconds. If using tomatoes, blot them with a paper towel so they don’t water things down. Let the veggies cool for a minute.
In a bowl, whisk the egg whites with salt, pepper, garlic powder, and smoked paprika until lightly frothy. Nothing fancy, just a quick whisk.
Divide the veggies among the muffin cups. Sprinkle cheese over the top if using.
Pour the egg whites into each cup, filling about three-quarters full. Give each cup a tiny wiggle with a spoon, so the egg gets into the nooks and crannies.
Bake for 18 to 22 minutes, until the muffins are puffed, set in the center, and a toothpick comes out clean. They’ll rise like little soufflés, then relax as they cool. Totally normal.
Cool in the pan for 5 minutes, then run a thin knife around the edges and transfer to a rack.

To store: keep in an airtight container in the fridge up to 4 days. For longer, freeze up to 2 months. Reheat gently, 20 to 30 seconds in the microwave, or in a low oven at 325°F, 5 to 7 minutes. I like to tuck two into a lunchbox with grapes and a handful of almonds — done.

Cook and Prep Times

Prep time: 15 minutes
Cook time: 18 to 22 minutes
Total time: about 35 minutes
Yield: 12 muffins

Nutritional information

Approximate nutrition, without cheese, per muffin:

Calories: 28
Protein: 4.5 g
Carbohydrates: 1.5 g
Fat: 0 g to 0.5 g
Fiber: 0.3 g
Sodium: ~180 mg, varies with salt and cheese

With cheese, expect slightly higher calories, fat, and sodium. Numbers are estimates and will vary based on brands and exact add-ins.

Frequently asked questions

Can I use whole eggs instead of just egg whites?

Yes. Use 8 to 10 whole eggs for 12 muffins, whisk well, and season the same way. The muffins will be richer and a touch more tender. Nutrition changes, of course — more calories and fat, more vitamin A and choline too.

How do I keep the muffins from sticking?

Grease the tin generously, especially the rims, or use silicone liners. Sautéing the veggies first helps cook off moisture, which also reduces sticking. Let muffins rest 5 minutes, then run a thin knife around the edges before lifting out.

What can I add for extra protein or a flavor twist?

Try finely chopped cooked turkey sausage, diced ham, or crumbled tofu. Fresh herbs like dill or basil are lovely. A spoonful of pesto in a few cups is fun. If dairy isn’t an issue, a sprinkle of feta or a dollop of cottage cheese in the mix adds creaminess.