I am cooking one of those Butterball 4 Pound turkey roasts today. I just started it. It was still frozen so I am cooking it @ 325 degrees. I have covered it w/foil. Typically uncovered, the instructions say it will take 2.5 hours to cook. My question is though--if it tightly covered in foil--how long will it take. I do not have a meat thermometer.
Thank you in advance. Mary