Ingredient Substitutions: Use cream of mushroom soup or cream of celery soup for a different flavor. For a lightened version, consider using reduced-fat cream of chicken soup. Optional: Add carrots or peas during cooking for added nutrition. For spice, include diced jalapeños or hot sauce. Store leftovers in an airtight container in the fridge for up to 3 days. Reheat by adding chicken broth if gravy thickens.