Step 1

Heat the oil in the skillet over medium high heat. Add the shallots and cook for 2-3 minutes to soften.

Step 2

Add the mushrooms to the skillet and cook, stirring occasionally, until the mushrooms wilt down and take on a golden color (approximately 5-6 minutes).

Step 3

After the mushrooms have browned add the salt, pepper, spinach leaves, nutmeg, and lemon zest. Stir well, and then cover until the spinach has wilted down (approximately 2-3 minutes).

Step 4

Remove the cover, reduce the heat to low and stir in the heavy cream and Parmesan cheese. Cook an additional 2-3 minutes until the cheese has melted and the sauce is creamy.Serve hot.