Season sliced chicken breast with salt and pepper. Cook in sauté pan until done. Meanwhile, bring 2 quarts of water to a boil; add noodles. Cook 5 minutes; drain.

In a bowl, combine sliced chicken, broccoli, soup, ranch dressing and milk. Add noodles and ½ cup cheese.

Pour into 3-quart casserole dish and top with remaining cheese. Bake at 400 ° F until casserole is bubbling and cheese is melted.