This is how we roasted turkey growing up. It works beautifully.
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Preheat: 325°
Yield: servings
Prep: 0:00
Wait: 0:00
Cook: 0:00
Instructions
Clean turkey
Tie securely
Rub salad oil on outside of turkey
Put in paper grocery bag - seam side up!
Staple bag closed
Put on trivet in roasting pan
Insert thermometer into thickest part of thigh (or just the breast)
Bake 13-15 minutes/lb at 325
Do not open bag until done!
Notes
This works for all sizes of turkey. We regularly did 20-22 lb turkeys in a grocery bag.
The bag keeps the juices from evaporating, leading to a lot of drippings for gravy. The gravy will be light tan since it didn't burn on the bottom of the roasting pan. Just use the straight drippings along with a water-flour slurry.
I tried it once after brining the turkey, and the skin didn't brown. Would need to figure out how to dry skin for browning after brining.