This slow-cooker recipe makes a traditional dinner completely fuss free. Serve this tender sirloin steak with a flavorful gravy over noodles for a home-style meal that your whole family is sure to request time and again. —Lisa VanEgmond, Annapolis, Illinois
In a 5-qt. slow cooker, combine the first 9 ingredients. Cover and cook on low for 7-8 hours or until beef is tender.
With a slotted spoon, remove beef and mushrooms. Place gravy mix in a large saucepan; gradually whisk in cooking liquid. Bring to a boil; cook and stir until thickened, about 2 minutes. Remove from the heat; stir in sour cream. Add beef and mushrooms to the gravy. Serve with noodles. If desired, sprinkle with parsley.