How Long To Cook A 15lb Turkey At 400 Degrees. I will ck it out in the early a m to see if thermometer has popped. 325 f for 3 3 4 to 4 hours.
Insert the thermometer into the bird between the breast and thigh being sure not to hit bone. 425 f for 3 to 3 1 4 hours. The first thing you should do before you embark on cooking a turkey is invest in an instant read thermometer.
Turn it breast side up to carve it.
Depending on the size of your bird it should take anywhere from 3 6 hours to roast at 400 f. Plan on 20 minutes per pound in a 350 degree f oven for a defrosted turkey and 10 to 15 minutes per pound for a fresh turkey. Baked for 1 hr. The only true test for doneness is the temperature of the meat not the color of the skin.
