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10-Minute Spinach Mushroom Omelette

Helen T. Patterson
A quick, easy, and nutritious omelette featuring sautéed mushrooms, fresh spinach, and optional cheese. High in protein, low in carbs, and packed with flavor, it’s perfect for weekday breakfasts or a light meal anytime.
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Prep Time 5 minutes
Cook Time 5 minutes
Total Time 10 minutes
Course Breakfast
Cuisine American
Servings 1 (omelette)

Equipment

  • 9-inch skillet – 1
  • Rubber spatula (1)
  • Whisk (1)
  • Bowl – 1

Ingredients
  

  • 2 tbsp butter divided
  • 1 cup cremini mushrooms sliced
  • 1 cup baby spinach
  • 1/4 tsp salt
  • 1/4 tsp black pepper
  • 1/2 cup shredded cheese of choice optional
  • 3 large eggs
  • 1 tbsp cold water

Instructions
 

  • Prepare Your Ingredients: Before turning on the stove, gather all your ingredients and equipment.
    Slice 1 cup of cremini mushrooms evenly to ensure they cook uniformly. Wash and drain 1 cup of baby spinach, removing any thick stems.
    Crack 3 large eggs into a bowl, and measure 1 tablespoon of cold water. This preparation ensures a smooth, stress-free cooking process.
  • Sauté the Mushrooms: Place a 9-inch skillet over medium-high heat and add 1 tablespoon of butter.
    Allow the butter to melt fully until it bubbles lightly but does not brown.
    Add the sliced mushrooms and gently stir to coat them in the butter.
    Cook for 5–6 minutes, stirring occasionally, until the mushrooms turn golden brown and release their natural moisture.
    This step builds rich flavor and a savory base for your omelette.
  • Wilt the Spinach: Once the mushrooms are tender and lightly caramelized, season them with 1/4 teaspoon salt and 1/4 teaspoon black pepper.
    Add the fresh spinach directly to the skillet and stir gently. Cook for 1–2 minutes until the spinach wilts but still retains its vibrant green color.
    Overcooking can make it mushy, so keep an eye on it. Once done, transfer the mushrooms and spinach to a plate and set aside.
  • Whisk the Eggs: In a clean bowl, combine the 3 eggs with 1 tablespoon of cold water.
    Whisk vigorously until the eggs are fully blended, slightly frothy, and uniform in color.
    The addition of cold water helps make the omelette fluffy by introducing a little steam during cooking.
    Take your time with this step; well-beaten eggs are the key to a soft, tender omelette.
  • Prepare the Skillet for Eggs: Wipe the skillet clean with a paper towel or give it a quick rinse and dry.
    Return the skillet to medium heat and add the remaining 1 tablespoon of butter.
    Allow it to melt completely and coat the bottom of the pan. This prevents sticking and adds a rich, buttery flavor to the omelette.
  • Cook the Egg Base: Pour the beaten eggs into the skillet, spreading them evenly.
    Let them cook undisturbed for about 1 minute until the edges start to set.
    Using a rubber spatula, gently pull the edges toward the center, letting the uncooked egg flow to the sides.
    Repeat this motion around the skillet to encourage even cooking while keeping the center slightly runny.
  • Add the Filling: When the eggs are mostly set but still soft on top, carefully add the sautéed mushrooms and wilted spinach to one half of the omelette.
    Sprinkle 1/2 cup of shredded cheese over the filling if desired. The cheese will melt from the residual heat, adding richness and creaminess.
    This layering ensures each bite is flavorful and well-balanced.
  • Fold the Omelette: Using the spatula, gently fold the empty half of the omelette over the side with the filling.
    Press lightly to seal but avoid pressing too hard to prevent breaking the omelette.
    Let it cook for another 30–60 seconds to allow the filling to warm through and the cheese to melt fully.
  • Serve and Enjoy: Carefully slide the omelette onto a plate. If you like, garnish with a sprinkle of fresh herbs or extra black pepper.
    Serve immediately while warm and fluffy. Pair with a fresh salad, avocado slices, or a slice of whole-grain toast for a complete, balanced breakfast.

Notes

  • This omelette is versatile—feel free to swap cremini mushrooms for button or shiitake mushrooms, or try different greens like kale or arugula.
  • Whisking the eggs with cold water creates a fluffier texture, giving a light, tender omelette.
  • Use a nonstick or well-seasoned skillet to prevent sticking and make folding easier.
  • Don’t overcook the eggs; slightly soft eggs ensure the filling stays moist and the omelette remains tender.
  • Optional cheese adds richness, but you can leave it out for a lighter, lower-fat version.