Preparation
- Cut flank steak lengthwise in half, then crosswise into 1/4-inch-thick slices. Combine soy sauce, 1 tablespoon sesame oil and 1 teaspoon cornstarch in large bowl. Add beef strips; toss to coat. Set aside to marinate.
- Cook noodles according to package directions. Drain; toss with remaining 1 tablespoon sesame oil. Keep warm. Combine beef broth, sugar, remaining 1 tablespoon cornstarch and vinegar in small bowl; set aside.
- Heat wok over high heat 1 minute or until hot. Drizzle 1 tablespoon vegetable oil into wok and heat 30 seconds. Add beef mixture and stir-fry 5 minutes or until lightly browned. Remove beef to bowl and set aside. Reduce heat to medium. Add ginger and stir-fry about 30 seconds.
- Add remaining 1 tablespoon vegetable oil to wok. Add onion wedges; cook and stir about 2 minutes or until wilted. Stir in half of tomato wedges. Stir broth mixture and add to wok. Cook and stir until liquid boils and thickens.
- Return beef and any juices to wok. Add remaining tomato wedges; cook and stir until heated through. Serve over cooked noodles.