Skillet Spaghetti
["1 lb. ground beef", "1 large onion, chopped (about 1 c.)", "1 (48 oz.) jar spaghetti sauce", "1 (7 oz.) pkg. thin spaghetti, broken into pieces", "1 (4 oz.) can mushroom stems and pieces, drained", "1/2 c. water", "1 Tbsp. sugar", "1/2 tsp. salt", "1/2 c. grated Parmesan cheese"]
["Cook and stir ground beef and onion in 4-quart Dutch oven until meat is light brown; drain.", "Stir in remaining ingredients, except cheese.", "Heat to boiling; reduce heat.", "Cover; simmer, stirring occasionally, until spaghetti is tender, about 25 minutes.", "Sprinkle with cheese."]
["ground beef", "onion", "spaghetti sauce", "thin spaghetti", "mushroom stems", "water", "sugar", "salt", "Parmesan cheese"]