Chicken Tetrazzini
["1 pkg. boned chicken breasts or thighs (boiled until tender, 20 to 30 minutes)", "1/3 c. spaghetti, cooked and drained", "2 cans mushroom soup", "1 c. chicken broth", "1/4 c. chopped onion", "1/2 c. grated Cheddar cheese"]
["Mix ingredients together.", "Pour into ungreased 2-quart casserole dish.", "Sprinkle cheese on top.", "Bake, uncovered, at 350\u00b0 for 45 minutes."]
["chicken breasts", "mushroom soup", "chicken broth", "onion", "Cheddar cheese"]