Cut beef steaks lengthwise into 1" wide strips then crosswise into 1" inch pieces. Spray Dutch oven with vegetable cooking spray; heat oven to medium-high heat until hot. Add beef and onion to pan; cook and stir 3 minutes . Stir tomatoes, pasta, and 1/2 cup water into pan. Bring to a boil, reduce heat to low. Cover tightly; simmer 20 minutes or until pasta is tender. Sprinkle with cheese before serving. Makes 4 servings.