Cutting chicken breasts in half horizontally helps them cook faster and more evenly., Pair with mashed potatoes, pasta, rice, or steamed vegetables like green beans or broccoli., Add fresh spinach or arugula towards the end of cooking for extra nutrients and color., Use boneless, skinless chicken thighs as a substitute with a longer cooking time required., Avoid substituting heavy cream with milk or half-and-half as the sauce will be less rich and thinner., Store leftovers in an airtight container in the refrigerator for up to 3-4 days., Reheat leftovers gently over low heat to prevent sauce separation., Freezing is not recommended due to cream sauce separation., Use a cornstarch slurry or grated Parmesan cheese to thicken the sauce if needed.