Sautéed Mushroom and Spinach Egg White Omelette
A light and fluffy egg white omelette filled with earthy sautéed mushrooms and fresh spinach, perfect for a healthy brunch. This American-inspired brunch recipe (low carb, vegetarian), ready in about 18 minutes, combines egg whites, button mushrooms, fresh spinach leaves into a breakfast that fuels the morning without the midday crash — make-ahead-friendly and balanced enough to anchor the first meal of the day. Each serving lands at about 140 calories and feeds 2, so it sits comfortably in a weekly breakfast rotation alongside fruit, yogurt, or coffee. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 6 large egg whites
- 1 cup, sliced button mushrooms
- 1 cup, packed fresh spinach leaves
- 1 tbsp olive oil
- 1/4 tsp salt
- 1/8 tsp black pepper
- 2 tbsp grated Parmesan cheese
- 1 tbsp chopped fresh chives
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Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Heat 1 tbsp olive oil in a non-stick skillet over medium heat. Add 1 cup sliced button mushrooms and sauté for 4-5 minutes until they release moisture and turn golden brown.
- Step 2: Add 1 cup fresh spinach leaves to the skillet and cook for 1-2 minutes, stirring until wilted. Season the vegetables with 1/4 tsp salt and 1/8 tsp black pepper, then transfer to a plate and set aside.
- Step 3: In a bowl, whisk 6 large egg whites with a pinch of salt until slightly frothy.
- Step 4: Wipe the skillet clean and return to medium heat. Pour the egg whites evenly into the pan, cooking for about 2 minutes until edges begin to set but the center is still slightly runny.
- Step 5: Evenly spread the sautéed mushrooms and spinach over one half of the egg whites, then sprinkle 2 tbsp grated Parmesan cheese on top.
- Step 6: Using a spatula, carefully fold the omelette in half and cook for another 1-2 minutes until cheese melts and eggs are fully cooked.
- Step 7: Slide the omelette onto a plate and garnish with 1 tbsp chopped fresh chives before serving.









