Tips: Feel free to add some mushrooms if you'd like! Sauté them with the spinach. You can also sprinkle in some Italian seasoning for a more herbaceous flavor. Make sure your heavy cream is at room temperature, and the pan is not too hot before adding it. If the cream gets overheated, it will curdle the sauce. And while curdled sauce is safe to eat, it doesn't look or taste as nice. Storage: Store Chicken Florentine in an airtight container in the refrigerator for 3 days. I do not recommend freezing this dish.