1Cook beef and sausage in 10-inch skillet over medium heat, stirring frequently, until beef is brown and sausage is no longer pink, about 8 minutes; drain.
2Mix beef mixture and remaining ingredients except spaghetti and Parmesan cheese in 3 1/2- to 4-quart slow cooker.
3Cover and cook on low heat setting 8 to 10 hours.
4About 20 minutes before serving, cook and drain spaghetti as directed on package. Serve sauce with hot cooked spaghetti and Parmesan cheese.