Heat butter in 2-quart pan ... flour and salt. Cook, stirring, until it bubbles. ... minute). Stir in Mozzarella cheese, Parmesan cheese, onion, basil, ... Top with chicken, spinach, 1/4 of cheese sauce, ... 15 minutes before cutting.
Ingredients: 16 (basil .. broth .. cheese .. flour .. milk .. mozzarella ...)