An easy way to form the pasta shell is to spoon the fettuccine mixture into the pie plate and then press firmly with another pie plate.
Wrap unbaked pie tightly and label. Freeze no longer than 1 month. About 2 hours 15 minutes before serving, heat oven to 400°F. Unwrap pie and re-cover with foil. Bake about 2 hours or until hot in center. Let stand 10 minutes before cutting.