Print

Mushroom & Swiss Protein Omelette

Mushroom & Swiss Protein Omelette - recipe card
Print Recipe

A restaurant-quality omelette with a tender, fluffy texture and rich savory flavor. Sautéed cremini mushrooms and caramelized onions are folded into perfectly cooked eggs with nutty Swiss cheese, creating a high-protein breakfast that feels indulgent yet balanced.

Ingredients

Scale
  • 8 large eggs
  • 1/4 cup whole milk
  • 1/2 teaspoon kosher salt, divided
  • 1/4 teaspoon freshly ground black pepper
  • 1 tablespoon unsalted butter
  • 1 tablespoon olive oil
  • 8 ounces cremini mushrooms, cleaned and thinly sliced
  • 1/2 cup yellow onion, finely diced
  • 1 garlic clove, minced
  • 1/4 teaspoon dried thyme
  • 4 ounces Swiss cheese, shredded (about 1 cup packed)
  • 1 tablespoon fresh chives, finely chopped (for garnish)

Instructions

  1. Crack the 8 large eggs into a medium mixing bowl. Add the 1/4 cup whole milk, 1/4 teaspoon of the kosher salt, and all of the black pepper. Whisk vigorously for 45-60 seconds until the mixture is completely homogeneous, frothy, and pale yellow. Thorough whisking incorporates air, which leads to a lighter, fluffier omelette texture. Set the bowl aside near the stove.
  2. Place a 10-inch nonstick skillet over medium heat. Add the 1 tablespoon olive oil and 1 tablespoon butter. Heat until the butter has fully melted and the mixture shimmers, about 90 seconds. Swirl the pan to coat the bottom evenly. Using both butter and oil provides rich flavor while raising the smoke point for better browning.
  3. Add the diced onion to the hot pan. Cook, stirring occasionally, for 3-4 minutes until the onions become translucent and just begin to soften. Do not let them brown at this stage. This gentle cooking starts to sweeten the onions without burning them.
  4. Add the sliced mushrooms and the remaining 1/4 teaspoon kosher salt to the pan with the onions. The salt will help draw moisture from the mushrooms. Cook, stirring only every 1-2 minutes, for 6-8 minutes. Allow the mushrooms to sit and develop a golden-brown sear on one side before stirring. You’ll know they’re ready when they have shrunk significantly and released their liquid, which should be mostly evaporated.
  5. Add the minced garlic and dried thyme to the pan with the mushrooms and onions. Cook, stirring constantly, for 45-60 seconds until the garlic is very fragrant. Be careful not to burn the garlic, as it will turn bitter. Remove the entire mushroom mixture to a clean plate and set aside. Wipe the skillet clean with a paper towel.
  6. Return the clean, dry 10-inch nonstick skillet to medium-low heat. Let it warm for 1 minute. Properly preheating the pan ensures even cooking and prevents the eggs from sticking immediately.
  7. Give the egg mixture one final brief whisk, then pour it into the preheated skillet. Let it sit undisturbed for 10-15 seconds until you see a thin, cooked layer forming at the edges. Using a heatproof silicone spatula, gently push the cooked edges toward the center while tilting the pan to allow the uncooked egg to flow into the empty space. Repeat this process around the circumference of the pan.
  8. Continue cooking on medium-low heat for 2-3 minutes, gently lifting and tilting, until the top surface is mostly set but still looks slightly wet and glossy. The bottom should be a uniform pale gold without dark spots. If the bottom is coloring too quickly, reduce the heat immediately.
  9. Sprinkle half of the shredded Swiss cheese evenly over one half of the omelette. Spoon all of the reserved mushroom and onion mixture evenly over the same half. Top the mushrooms with the remaining Swiss cheese. The cheese layers will melt from both the residual heat of the filling and the eggs.
  10. Using your spatula, carefully lift the unfilled side of the omelette and fold it over the filled side. The omelette should hold its shape. If any uncooked egg runs out, gently press the seam with the spatula to seal. Cook for 1 more minute to fully set the interior and melt the cheese.
  11. Slide the folded omelette onto a cutting board. Let it rest for 2 minutes before slicing. This resting period allows the internal heat to finish cooking the eggs gently and lets the cheese set slightly, making for cleaner slices.
  12. Using a sharp chef’s knife, cut the omelette into 4 equal wedges. Transfer each wedge to a plate. Garnish with the finely chopped fresh chives. Serve immediately while hot and fluffy.

Notes

Storage: Leftover omelette wedges can be stored in an airtight container in the refrigerator for up to 2 days. Reheating: For best texture, reheat in a skillet over low heat with a lid for 3-4 minutes, or microwave individual portions on medium power for 45-60 seconds until warmed through. Avoid high heat, which will make the eggs rubbery. This omelette does not freeze well due to the texture of the cooked eggs and mushrooms. Protein Boost: For an even higher protein version, whisk 1/2 cup of full-fat cottage cheese or 1/4 cup of nutritional yeast into the egg mixture before cooking.

Nutrition

Keywords: mushroom Swiss omelette, protein omelette recipe, high protein breakfast, savory omelette, mushroom and cheese omelette, weekend brunch, egg recipe, quick breakfast, diner-style omelette, cremini mushroom recipe

Find it online: https://thehighproteinrecipes.com/mushroom-swiss-protein-omelette/