1. Combine all ingredients except salsa and toppings in 4-1/2 to 5-1/2-quart slow cooker; mix well. Cover and cook on HIGH 5-1/2 to 6 hours or on LOW 8 to 9 hours or until beef is tender. (No stirring is necessary during cooking.)
2. Just before serving, stir in salsa; cook 2 to 3 minutes or until heated through. Serve with toppings, as desired.