Cook beef in large skillet, until brown; drain. Stir in water, tomatoes with juice, and seasoning mix. Cook until mixture comes to boil. Add pasta; return to a boil. Reduce heat to low; cover. Cook, stirring occasionally, for 15 min. or until pasta is tender. Stir in milk. Remove from heat; stir in cheese. Sprinkle additional cheese over top. Cover; let stand 5-10 min. before serving.