In a large resealable plastic bag, combine the flour, salt and pepper. Add meat, a few pieces at a time; toss to coat.
In a Dutch oven, cook beef and onions in oil until the meat is browned on all sides and onions are tender. Stir in the broth, water, vinegar, carrots and seasonings; bring to a boil. Reduce heat; cover and simmer for 1-1/2 hours or until meat is almost tender. Discard bay leaves.
In a large bowl, beat egg; add the crumbs, flour, parsley, onion and seasonings. Stir in potatoes. Shape into 1-1/2-in. balls. Dust with flour. Bring stew to a boil; drop dumplings onto stew. Cover and simmer for 30 minutes (do not lift cover). Serve immediately. Yield: 6 servings.