Sprinkle beef pieces with ¼ teaspoon of the seasoned salt and ¼ teaspoon of the garlic-pepper blend.

In 12-inch nonstick skillet, cook beef over medium-high heat 3 to 4 minutes, turning once or twice, until browned and desired doneness.

Remove from skillet; cover to keep warm.

In same skillet, melt butter over medium heat.

Add stir-fry vegetables; cook 2 minutes, stirring frequently.

Add potatoes; sprinkle with remaining ½ teaspoon seasoned salt and ¼ teaspoon garlic-pepper blend.

Cook uncovered 8 to 10 minutes, stirring frequently, until tender.

Place beef in skillet with potatoes, pushing potatoes around beef.

Cook 1 to 2 minutes, turning beef once, until hot.

Sprinkle with cheese.

Cover; heat until cheese is melted.