This is another recipe I adopted from my MIL. I believe she received it when she was taking Home Economics in high school. It is a great basic recipe. Add onions, peppers, etc to make it your own. I know it sounds strange to add mushroom soup, but it cuts the acid from the tomatoes and makes it a richer sauce.
1 pound ground beef (turkey and venison also work well)
1 cup dairy-free cream of mushroom soup
1 26.5 can Hunts Spaghetti sauce (check label for cheeses)
(I liked Traditional Ragu, but it has cheese in it)
Brown meat. Drain off grease. Stir in soup and sauce. Simmer 5 minutes. Serve over spaghetti noodles.