Place the beef stew meat cubes into the bottom of a 6-quart slow cooker.
In a medium mixing bowl, whisk together the beef broth, cream of mushroom soup, brown gravy packet, onion soup mix packet, garlic powder, and Worcestershire sauce until well combined.
Pour the gravy mixture over the beef, stirring slightly to ensure all meat is coated.
Cover and cook on LOW for 7-8 hours or on HIGH for 3-4 hours, until the beef is fork-tender.
About 15 minutes before serving, cook the egg noodles in a separate pot of boiling salted water according to package directions. Drain well.
Serve the beef tips and gravy generously over the cooked egg noodles. Garnish with fresh chopped parsley.