Sautéed Spinach and Mushroom Omelette with Feta

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

A fluffy three-egg omelette filled with sautéed spinach, mushrooms, and tangy feta cheese for a savory brunch option. This Mediterranean-inspired brunch recipe (vegetarian), ready in about 18 minutes, combines large eggs, fresh spinach leaves, white mushrooms, sliced 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 280 calories and feeds 1, 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: 8 min Cook: 10 min Serves 1 Mediterranean cuisine 280 cal/serving
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Ingredients

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Instructions

  1. Step 1: Heat 1 tbsp olive oil in a medium non-stick skillet over medium heat. Add 1/2 cup sliced white mushrooms and sauté for 4 minutes until golden and softened.
  2. Step 2: Add 1 cup fresh spinach leaves to the skillet and cook, stirring, for 2 minutes until wilted. Remove the vegetables from the skillet and set aside.
  3. Step 3: In a bowl, whisk 3 large eggs with 1/4 tsp salt and 1/8 tsp black pepper until frothy.
  4. Step 4: Melt 1 tbsp unsalted butter in the same skillet over medium-low heat. Pour in the eggs and cook undisturbed for 1-2 minutes until the edges begin to set but the center is still slightly runny.
  5. Step 5: Evenly distribute the sautéed spinach and mushrooms over one half of the eggs, then sprinkle 1/4 cup crumbled feta cheese on top.
  6. Step 6: Carefully fold the omelette in half using a spatula and cook for another 1 minute until the cheese softens and the eggs are fully set.
  7. Step 7: Slide the omelette onto a plate and serve immediately.

Frequently asked questions

How long does Sautéed Spinach and Mushroom Omelette with Feta take to make?

Total time is about 18 minutes (8 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 Spinach and Mushroom Omelette with Feta?

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 Spinach and Mushroom Omelette with Feta?

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 Spinach and Mushroom Omelette with Feta for a different number of people?

The recipe is written for 1 servings. Multiply each ingredient by (your serving target / 1). 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 Spinach and Mushroom Omelette with Feta 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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