Set aside seasoning packets from noodles. Cook noodles according to package directions., Meanwhile, in a small bowl, combine cornstarch and 1/4 cup broth until smooth; set aside. In a large skillet or wok, stir-fry beef in oil until no longer pink. Add soy sauce; cook until liquid has evaporated, 3-4 minutes. Remove beef and keep warm., Add the corn, broccoli, red pepper, carrots, onions and remaining broth to the pan. Sprinkle with contents of seasoning packets. Stir-fry until vegetables are crisp-tender, 5-7 minutes., Stir the cornstarch mixture and add to skillet. Bring to a boil; cook and stir until thickened, about 2 minutes. Drain noodles. Add beef and noodles to pan; heat through. Garnish with peanuts.