Italian Casserole
["1 medium onion, chopped", "1 1/2 to 2 lb. hamburger", "1 pkg. hamburger seasoning mix", "1 1/2 c. Mozzarella cheese, shredded", "1 c. sour cream", "1 c. tomato sauce", "1 can crescent dinner rolls", "1/3 c. Parmesan cheese", "1/3 c. margarine, melted"]
["Brown hamburger and onion with seasoning mix.", "Drain.", "Add tomato sauce.", "Place in 9 x 13-inch pan.", "Mix cheese and sour cream and layer over meat mixture.", "Add the crescent rolls over the cheese mixture.", "Spread dough out flat.", "Mix Parmesan cheese and margarine.", "Spoon over dough.", "Bake at 400\u00b0 for 20 to 25 minutes."]
["onion", "hamburger", "hamburger", "Mozzarella cheese", "sour cream", "tomato sauce", "crescent dinner rolls", "Parmesan cheese", "margarine"]