Sautéed Shiitake and Spinach Egg White Omelette

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A light and nutritious egg white omelette filled with earthy shiitake mushrooms and fresh spinach, ideal for a wholesome brunch. This mediterranean-inspired brunch (vegetarian) ready in about 20 minutes combines egg whites, fresh shiitake mushrooms, fresh baby spinach 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 150 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.

Prep: 10 min Cook: 10 min Serves 2 Mediterranean cuisine 150 cal/serving
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Ingredients

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Instructions

  1. Step 1: Heat 1 tbsp olive oil in a non-stick skillet over medium heat. Add 2 minced garlic cloves and sauté for 30 seconds until fragrant.
  2. Step 2: Add 1 cup sliced fresh shiitake mushrooms to the skillet and cook for 4-5 minutes until they release their moisture and start to brown.
  3. Step 3: Stir in 1 cup fresh baby spinach and cook for another 1-2 minutes until wilted. Season the mixture with 1/4 tsp salt and 1/8 tsp black pepper, then transfer to a plate.
  4. Step 4: Wipe the skillet clean, then pour in 6 large egg whites, spreading evenly over medium-low heat. Let cook undisturbed for 2-3 minutes until the edges begin to set.
  5. Step 5: Spoon the mushroom and spinach mixture evenly over one half of the egg whites, sprinkle 2 tbsp grated Parmesan cheese on top, and cook for another minute until the cheese melts.
  6. Step 6: Carefully fold the omelette in half and slide onto a serving plate. Garnish with 1 tbsp chopped fresh chives before serving.

Frequently asked questions

How long does Sautéed Shiitake and Spinach Egg White Omelette take to make?

Total time is about 20 minutes (10 min prep + 10 min cook). Most home cooks find this fits comfortably into a busy morning; prep components the night before to save active time.

How do I store leftover Sautéed Shiitake and Spinach Egg White Omelette?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat in the microwave or oven; egg- or grain-based items may need a splash of milk or water to refresh texture. Cold-served items (overnight oats, smoothies) keep 2–3 days in the fridge.

Can I substitute ingredients in Sautéed Shiitake and Spinach Egg White Omelette?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Sautéed Shiitake and Spinach Egg White Omelette for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Sautéed Shiitake and Spinach Egg White Omelette vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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