MELT butter in large saute pan on medium heat. Add onions; sweat until soft and translucent. Add meat; cook until done, stirring occasionally. Drain meat mixture; return to pan. Stir in carrots, seasonings, bay leaves, beef base, tomato paste, steak sauce and water. Bring just to boil; simmer on medium-low heat 40 to 50 min. or until slightly thickened. Stir in peas and parsley; cook 10 min. or until heated through.
FOR each serving: Spoon about 5 oz. meat mixture into ovenproof baking dish; top with 1 scoop potatoes. Bake in 350ºF standard oven 5 min. or until heated through.