Stuffed bell peppers filled with beef and rice make for a nutritious and flavorful meal. Cook ground beef with onions, garlic, and your choice of seasonings. Mix in cooked rice and tomato sauce. Cut the tops off bell peppers and remove the seeds. Stuff the peppers with the beef and rice mixture and place them in a baking dish. Bake in the oven until the peppers are tender and the filling is heated through. These stuffed bell peppers are a complete meal in themselves.