Cooking pasta should never be more than approximately 5 minutes on high. You would want the thinner pastas Al Dente (not limp). The addition of the peas and Prosciutto would compliment the addition of chopped sweet onions. Of course your total cooking time would be no more than 10 minutes for this dish, including the browning/softening of the additional onion (to translucent). Cooking times for pasta, however, vary if you are using homemade fresh pasta and not the boxed variety.