Step 1

Stir the soup, water, Worcestershire sauce, mushrooms, onions, garlic and black pepper in a 6-quart slow cooker. Add the beef and stir to coat.

Step 2

Cover and cook on LOW for 8 to 9 hours or until the beef is fork-tender. Stir the sour cream in the cooker. Serve the beef mixture with the noodles. Sprinkle with the parsley, if desired.