In a bowl mix cream cheese, sour cream and onions; set aside. Brown the meat in butter; add tomato sauce, sugar, salt, pepper and Worcestershire. Cook noodles according to package directions. In a 2-quart casserole alternate layers of noodles, beef mixture, and sour cream mixture. Top with shredded cheese and bake at 350°F until brown and cheese is melted.
Happily scanned and Mc formatted, using Buster, by Pamela Creeden 5/7/98