Lasagna
["1 onion", "2 lb. ground beef", "1 can spaghetti sauce", "1 bag Cheddar cheese", "1 bag Mozzarella cheese", "1 box noodles"]
["Cook ground beef.", "Mix the spaghetti sauce and onion together. In a 9 x 18-inch pan, layer the noodles, meat and cheeses until pan is full.", "Cook for 20 minutes in oven at 350\u00b0."]
["onion", "ground beef", "spaghetti sauce", "Cheddar cheese", "Mozzarella cheese", "noodles"]