Chicken Divan is a comforting casserole featuring tender chicken breast and fresh broccoli baked in a rich Parmesan cream sauce. This version skips the canned soups, relying instead on a simple homemade roux enriched with whipping cream and a splash of white wine for a deeper flavor. It is perfect for a cozy weeknight dinner or a Sunday family meal. The savory, velvety sauce pairs beautifully with the earthy broccoli and the golden, bubbly cheese topping.