Chicken Tetrazzini
["1/2 c. butter", "2 (2 1/2 to 3 lb.) broiler-fryers", "2 onions", "1/4 tsp. pepper and salt", "water", "1 (16 oz.) pkg. spaghetti", "1/2 lb. mushrooms, sliced", "1 Tbsp. lemon juice", "1/2 c. all-purpose flour", "1/4 tsp. ground nutmeg", "paprika", "1/2 c. dry sherry (optional)", "1 c. half and half", "1 (3 oz.) jar grated Parmesan cheese"]
["In 8-quart saucepot, place chickens, 1 onion, pepper and 1 tablespoon salt.", "Cover with water over high heat; heat to boiling.", "Reduce heat to low, cover and simmer chickens for 30 minutes or until fork-tender.", "Remove chickens to large bowl."]
["butter", "fryers", "onions", "pepper", "water", "spaghetti", "mushrooms", "lemon juice", "all-purpose", "ground nutmeg", "paprika", "sherry", "Parmesan cheese"]