How long to cook stuffed turkey What is the cooking time for a stuffed turkey at 350 degrees? 
I read that it should be 20 minutes per pound, is this correct?
Stick a thermometer in the stuffing; when the stuffing is at 160F, you're done. Since heat radiates inwards from the outside, you don't want the very middle of the dish (where the stuffing is) to be any colder than needed to kill salmonella. Estimate a bit longer than an unstuffed turkey.