Sautéed Mushroom and Spinach Omelet with Sharp Cheddar

By AislePrompt Editorial · Published 2026-04-20 · Updated 2026-04-20

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 recipe (low-carb), ready in about 20 minutes, pairs large eggs, 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 low-carb week and pairs well with cauliflower rice or roasted green vegetables. 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

• 4 large eggs
• 1/2 cup, sliced mushrooms
• 1/4 cup fresh spinach
• 1/4 cup, shredded sharp cheddar cheese
• 1 tbsp butter
• 1/4 tsp salt
• 1/8 tsp black pepper

The nonstick pan we’d use for this → Best Nonstick Cookware for 2026: Top 5 Skillet Picks + Buying Guide

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.