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Spinach and Mushroom Omelette

Published: Nov 22, 2025 by Lea · This post may contain affiliate links · Leave a Comment

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A simple, wholesome omelette that I love making for busy mornings when I want something hearty, flavorful, and nourishing without much effort.

Spinach and Mushroom Omelette

Why You’ll Love This Recipe

I love how this omelette brings together tender mushrooms, sweet onions, and vibrant spinach for a satisfying meal that feels both light and filling. I also appreciate that it cooks quickly, uses basic ingredients, and works perfectly for breakfast, brunch, or even a quick dinner. The dried oregano adds a comforting herbal touch that I always find irresistible.

Ingredients

(Note: All ingredient amounts are listed in the recipe card below.)

2 teaspoon extra virgin olive oil
2 cups mushrooms, sliced
1 onion, chopped
4 cups spinach, stems removed if needed
4 eggs, whisked
salt and pepper, to taste
1 teaspoon dried oregano

Directions

  1. I heat the olive oil in a nonstick skillet over medium heat.
  2. I add the mushrooms and onions, cooking until they soften and the mushrooms release their moisture.
  3. I stir in the spinach and cook until it wilts.
  4. I pour the whisked eggs over the vegetables and season with salt, pepper, and oregano.
  5. I let the omelette cook gently until set, folding it in half before serving.

Servings and Timing

I make this recipe to serve 2 people.
Prep time: about 10 minutes
Cook time: about 10 minutes
Total time: about 20 minutes

Variations

I sometimes add crumbled feta for a tangy twist, or swap the mushrooms for bell peppers when I want something sweeter. I also enjoy adding a pinch of chili flakes for extra warmth. When I’m in the mood for more richness, I use a bit of butter in place of the olive oil.

Storage/Reheating

I keep leftovers in an airtight container in the refrigerator for up to 2 days. I reheat the omelette gently in a skillet over low heat or in the microwave for a short burst to avoid overcooking the eggs.

FAQs

Can I use frozen spinach?

Yes, I thaw and squeeze out excess moisture before adding it to the pan.

Can I make this with egg whites only?

I can replace the whole eggs with egg whites, though the texture becomes lighter.

What type of mushrooms work best?

I like using cremini or white button mushrooms, but any variety I enjoy works well.

Can I add cheese?

Yes, I often add cheddar, mozzarella, or feta for extra creaminess.

Can I meal-prep this omelette?

I can prepare the filling ahead, then cook the omelette fresh for best results.

What pan size should I use?

I prefer an 8-inch nonstick skillet for the ideal thickness.

How do I prevent the omelette from sticking?

I make sure the pan is well-heated and lightly coated with oil.

Can I make this dairy-free?

Yes, the recipe is naturally dairy-free unless I choose to add cheese.

How do I avoid overcooking the eggs?

I cook on medium to medium-low heat and remove the omelette as soon as it’s just set.

Conclusion

I love how this spinach and mushroom omelette brings simple ingredients together to create a flavorful and nourishing dish. It’s quick, customizable, and perfect for any time of day when I want something satisfying without much fuss.

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Spinach and Mushroom Omelette

Spinach and Mushroom Omelette


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Description

A quick and nourishing spinach and mushroom omelette made with sautéed vegetables, whisked eggs, and a touch of dried oregano for a flavorful, satisfying meal.


Ingredients

  • 2 tsp extra virgin olive oil
  • 2 cups mushrooms, sliced
  • 1 onion, chopped
  • 4 cups spinach, stems removed
  • 4 eggs, whisked
  • Salt and pepper, to taste
  • 1 tsp dried oregano


Instructions

  1. Heat the olive oil in an 8-inch nonstick skillet over medium heat.
  2. Add the mushrooms and onions and cook until softened and the mushrooms release their moisture.
  3. Stir in the spinach and cook until wilted.
  4. Pour the whisked eggs over the vegetables and season with salt, pepper, and dried oregano.
  5. Cook gently until the omelette is set, then fold it in half and serve.

Notes

  • Add crumbled feta for a tangy twist.
  • Swap mushrooms for bell peppers for added sweetness.
  • Add chili flakes for a hint of heat.
  • Use butter instead of olive oil for a richer flavor.
  • Frozen spinach can be used if thawed and drained well.

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Welcome to Recipes By Lea

I spent most of my twenties working as a freelance travel photographer, bouncing between cities for weeks at a time. Lisbon, Istanbul, Bangkok, Mexico City—wherever a client needed architecture, street life, and local culture captured in a real, honest way. It was exciting and fast, but it also meant inconsistent routines and way too many meals that came from cafés, room service, or whatever I could grab between shoots.

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