- Scrambled Egg first, in a small bowl whisk eggs, salt, and pepper together and keep aside In a wide non-stick pan, add butter. Once the butter melts, add sliced mushrooms and saute it. Cook and stir for about 4 minutes. Add spinach to mushrooms. Cook and stir until it is wilted. Simmer the flame and add egg mixture. Cook until the eggs are cooked and form a layer. Stir together. Stir in cheese. Your Spinach Mushroom Scrambled Eggs is ready to be served.