Season meat with salt and pepper; cook in 1/4 cup dressing in Dutch oven on high heat 6 to 8 min. or until browned on both sides.
Add onions; cook 5 to 6 min. or until caramelized, stirring occasionally.
Add remaining dressing, potatoes, carrots and enough water to come 3/4 the way up side of meat. Bring to boil; cover. Simmer on low heat 2 hours or until meat and vegetables are tender.
Remove meat from pan; cut across the grain into thin slices.
Serve meat and vegetables topped with pan drippings and parsley.