Sautéed Mushroom and Spinach Omelet with Sharp Cheddar

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A protein-packed breakfast featuring tender mushrooms and spinach folded into fluffy eggs, topped with melted sharp cheddar for a satisfying keto start. This american-inspired keto (low-carb) ready in about 20 minutes pairs large eggs, sliced mushrooms, fresh spinach for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 2, 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: 10 min Serves 2 American cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: Whisk 4 large eggs with 1/4 tsp salt and 1/8 tsp black pepper in a bowl until fully combined and slightly frothy.
  2. Step 2: Heat 1 tbsp butter in a non-stick skillet over medium heat until melted and shimmering.
  3. Step 3: Add 1/2 cup sliced mushrooms and cook for 3-4 minutes until golden and tender, stirring occasionally.
  4. Step 4: Stir in 1/4 cup fresh spinach and cook for 1 minute until wilted and bright green.
  5. Step 5: Pour the whisked eggs over the mushroom mixture, tilting the pan to distribute evenly.
  6. Step 6: Cook for 2-3 minutes, gently lifting edges with a spatula until eggs are set but still moist.
  7. Step 7: Sprinkle 1/4 cup shredded sharp cheddar cheese over the top, fold the omelet in half with the spatula, and cook for 1 more minute until cheese melts.

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Frequently asked questions

How long does Sautéed Mushroom and Spinach Omelet with Sharp Cheddar take to make?

Total time is about 20 minutes (10 min prep + 10 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 Mushroom and Spinach Omelet with Sharp Cheddar?

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 Mushroom and Spinach Omelet with Sharp Cheddar?

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 Mushroom and Spinach Omelet with Sharp Cheddar 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 Mushroom and Spinach Omelet with Sharp Cheddar low-carb?

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

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