1 boneless beef chuck roast (4lbs) trimmed
1 lg sweet onion, chopped
1 1/3 c plus 3 tbsp water, divided
1 can condensed French Onion soup
1 c packed brown sugar
1/3 c reduced-sodium soy sauce
1/4 c cider vinegar
6 garlic cloves, minced
1 tsp ground ginger
1/4 tsp pepper
3 tbsp corn starch
Cut roast in half. Transfer to crock pot; add onion and 1 1/3 c water. Combine soup, brown sugar, soy sauce, vinegar, garlic, ginger and pepper in small bowl. Pour over top of roast. Cover and cook on low 7-8 hours or until tender. Remove meat to a serving platter. Skim juices for fat and transfer liquid to a small saucepan. Bring liquid to a boil. Combine cornstarch and remaining water until smooth. Gradually stir into pan until thickened.