Sautéed Spinach and Mushroom Omelette with Crumbled Feta

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A protein-rich omelette featuring earthy mushrooms and fresh spinach, finished with salty feta for a satisfying keto breakfast. This american-inspired keto ready in about 18 minutes pairs large eggs, unsalted butter, cremini mushrooms for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 1, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. 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.

★ 4.4 (8 ratings) Prep: 10 min Cook: 8 min Serves 1 American cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Whisk together 4 large eggs, 1/4 tsp salt, and 1/8 tsp black pepper in a bowl until fully combined.
  2. Step 2: Melt 1 tbsp unsalted butter in an 8-inch nonstick skillet over medium heat until shimmering.
  3. Step 3: Add 3 oz thinly sliced cremini mushrooms and cook for 4 minutes, stirring occasionally, until golden brown and tender.
  4. Step 4: Stir in 2 cups fresh spinach and cook for 1 minute until wilted and bright green.
  5. Step 5: Pour the egg mixture over the vegetables in the skillet, tilting to distribute evenly.
  6. Step 6: Cook for 3-4 minutes, gently lifting edges with a spatula until set but still moist in the center.
  7. Step 7: Sprinkle 2 oz crumbled feta cheese over the top and fold the omelette in half.
  8. Step 8: Cook for 1 more minute until feta begins to melt, then slide onto a plate.

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Frequently asked questions

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

Total time is about 18 minutes (10 min prep + 8 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Sautéed Spinach and Mushroom Omelette with Crumbled Feta?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep large eggs from drying out.

Can I substitute ingredients in Sautéed Spinach and Mushroom Omelette with Crumbled 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 Crumbled 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.

What goes well with Sautéed Spinach and Mushroom Omelette with Crumbled Feta?

American keto like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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