1. Cook pasta according to package directions, omitting salt and fat. Add vegetables to pasta the last 2 minutes of cooking. Drain; set aside.
2. Using the same saucepan (pan will still be warm), melt cream cheese over low heat; add sour cream, stirring until smooth. Add milk, stirring until smooth. Add spice blend and salt; stir well. Add pasta mixture, and toss well. Sprinkle with Parmesan cheese. Serve immediately.