Heat a Dutch oven over medium-high heat. Sprinkle steak with salt and pepper; coat with cooking spray. Add steak to pan; cook 2 minutes or until browned, stirring frequently. Add stewing vegetables, next 3 ingredients, 3 tablespoons water, Worcestershire sauce, and bouillon granules; bring to a boil. Cover, reduce heat, and simmer 12 minutes or until vegetables are tender.
Combine cornstarch and remaining 1 tablespoon water; stir in ketchup until smooth. Add ketchup mixture to steak mixture; bring to a boil. Cook, stirring constantly, 1 to 2 minutes or until slightly thickened.