Preheat oven to 325°. Combine Lipton® Recipe Secrets® Onion Soup Mix, water, soy sauce, brown sugar and ginger in Dutch oven or 5-quart heavy oven-proof saucepot; add roast.
Bake covered 1 hour 45 minutes.
Add potatoes and bake covered an additional 45 minutes or until beef and potatoes are tender.
Remove roast and potatoes to serving platter and keep warm; reserve juices.
Blend water with flour in small cup with wire whisk. Add flour mixture to reserved juices in Dutch oven. Bring to a boil over high heat. Boil, stirring occasionally, 2 minutes. Serve with roast and potatoes.