Easy Pepper Steak

-3 tablespoons cornstarch
-1 3/4 cup Swanson® Beef Stock
-1 tablespoon soy sauce
-1/4 teaspoon garlic powder
OR 2 cloves garlic, minced
-1 pound boneless beef sirloin steak, 3/4-inch thick, cut into very thin strips
-2 cup fresh or frozen green or red pepper strips
-1 medium onion, cut into thin wedges
-4 cups hot cooked regular long-grain white rice, cooked without salt

* Stir the cornstarch, stock, soy sauce and garlic powder in a small bowl until the mixture is smooth.
* Stir-fry the beef in a 10-inch nonstick skillet over medium-high heat until it's well browned, stirring often. Pour off any fat.
* Reduce the heat to medium. Add the peppers and onion. Stir in the cornstarch mixture. Cook and stir until the mixture boils and thickens. Serve the beef mixture over the rice.