How Long Should I Cook My Turkey Upside Down?
If you choose to cook a turkey upside down, you should roast it for the first hour at 375°F. After that, you should lower the temperature to 325°F and continue roasting the turkey until it is cooked through, which should take about 13-15 minutes per pound. The best way to determine if your turkey is fully cooked is to use a meat thermometer inserted into the thickest part of the bird, which should read 165°F.