MELT butter in saute pan on low heat. Add onions; cook 12 to 15 min. or until golden brown, stirring occasionally.
MEANWHILE, cook meat in separate saute pan on medium-high heat 2 min. or until done, stirring frequently; place in bowl. Add steak sauce; toss to coat. Meanwhile, deep fry steak fries as directed on package; drain.
FOR each portion, 2 servings: Plate 5 oz. meat; top with 1/2 lb. steak fries and 4 oz. onions. Drizzle with 1/4 cup (2 oz.) CHEEZ WHIZ.