Egg White Spinach Mushroom Omelette
By the QuiteRecipes team (Jamy & Kaïna) | Food Service Professional, Early Childhood Expert & Parents
A light, fluffy omelette packed with egg whites, baby spinach and mushrooms — a low-calorie, high-protein meal for cutting season.
Clean protein, no frills. Fluffy egg whites fold around baby spinach and mushrooms into a light, high-protein omelette — cutting-season fuel that doesn't feel like a sacrifice.
🥄 Ingredients
- 🫗 8 large egg whites (about 240g / 1 cup liquid egg whites)
- 🫗 1 large whole egg
- 🫗 1 cup (60g) baby spinach, chopped
- 🫗 1 cup (100g) mushrooms, thinly sliced
- 🫗 1/4 yellow onion, finely diced
- 🫗 2 tablespoons (10g) grated Parmesan
- 🫗 1/2 teaspoon olive oil plus nonstick spray
- 🫗 Salt and black pepper, to taste
Nutrition Facts*
*Nutritional information is an estimate and may vary based on ingredients, brands and portion sizes. Values are provided per serving.
👨🍳 Instructions
Whisk the egg whites, whole egg and a pinch of salt and pepper in a bowl until slightly frothy.
Heat the oil in a nonstick skillet over medium heat. Sauté the mushrooms and onion for 3-4 minutes until golden.
Add the spinach and cook for 1 minute until it wilts. Spread the filling evenly in the pan.
Pour the egg mixture over the vegetables and tilt the pan to cover the base.
Cover and cook for 3-4 minutes until nearly set, then sprinkle with Parmesan and fold the omelette in half.
Slide onto a plate and serve hot.
⚠️ Common Mistakes
- ✕
Loading the pan with mushrooms in one layer too thick, which makes them steam and turn soggy.
- ✕
Cooking the eggs over high heat, which browns the outside before the middle sets.
- ✕
Forgetting to wipe the pan between batches if you double the recipe, causing sticking.
🔄 Variations
Swap spinach for arugula or Swiss chard.
Add smoked turkey or lean ham for even more protein.
Sprinkle with turmeric or smoked paprika for extra flavor without calories.
🧊 Storage
- 📦
Best eaten fresh, straight from the pan.
- 📦
Store leftovers in the fridge for up to 1 day and reheat gently in a pan.
💡 Chef Tips
Tip 1: Cook the mushrooms first, in a single layer, so they brown instead of steaming.
Tip 2: Fold the omelette while the top is still slightly runny; it finishes cooking on the plate.
Tip 3: Use a rubber spatula to lift the edges and let the runny egg flow underneath for even cooking.
❓ FAQ
Is this omelette good for cutting? Yes
it delivers 36g of protein for under 300 calories, making it easy to fit into a caloric deficit.
Can I use only egg whites without the whole egg? Absolutely, the omelette stays fluffy; the yolk just adds richness and color.
Is it gluten-free? Yes, this recipe contains no gluten-containing ingredients.
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About the Authors
This recipe and guide was developed, tested, and approved in our home kitchen and daily life. Jamy is a retired Food Service District Manager and Early Childhood Program Manager who spent his career overseeing multi-site restaurant operations, large-scale culinary production, and daycare menu management. Kaïna brings the ultimate real-world test: making sure it brings ease and joy to our kids on a busy weeknight.
Read more about our professional background and philosophy →