Sprinkle beef with peppered seasoned salt. In 4-quart Dutch oven or 12-inch nonstick skillet, cook beef over medium-high heat about 4 minutes, stirring frequently, until brown.
Stir in gravy, water, mustard and thyme until well blended. Stir in potatoes, green beans and carrots. Heat to boiling; reduce heat to medium-low. Cover and cook 20 to 22 minutes, stirring occasionally, until potatoes and beans are tender.