In a medium-sized saucepan or in a double boiler, combine all the sauce ingredients. Cook over a low heat until everything is melted and the sauce is velvety smooth, about 20 minutes. Meanwhile, in a large pot of boiling salted water, cook the fettuccine to desired doneness; drain and place in a large bowl. Mix in the vegetables and sauce, and sprinkle with the Parmesan cheese. Serve immediately.
(hide) If you are waiting for your turn, click on "change" next to the "refresh" on the main page, then set refresh the page to 30 seconds to get your turn to move displayed faster. (Servant) (show all tips)