Baked spaghetti and meatballs is a super easy five-ingredient casserole recipe sure to be a hit with the kids. This is comfort food in its most pure form. The combination of tender pasta, savory and soft meatballs, a lightly seasoned tomato sauce, and salty parmesan cheese is always welcome, especially on the coldest winter day. This is a wonderful recipe for busy cooks because it's a one-dish meal. Just saut the onion and cook the pasta until it's almost done, then mix everything together, cover it, and pop it into the oven. In about half an hour, you can serve delicious spaghetti and meatballs. Serve this easy recipe with toasted garlic bread and a green salad tossed with fresh veggies. Some iced tea or a glass of red wine would be delicious. And enjoy every bite.