Thaw turkey in the refrigerator. Thaw time is approximately 24 hours for every 4-5 pounds of turkey.
Remove the packaging from the turkey and remove the giblets from inside the turkey cavity.
Rinse and pat dry.
Truss the turkey by securing the legs with cooking twine and tucking the wings in.
Rub the softened butter under the skin of the turkey, as well as all over the outside of the turkey skin.
Season genersouly with salt, pepper, and chopped fresh herbs.
Add the onion, lemon, sprigs of sage, along with any other fresh herbs to the cavity of the turkey.
Roast in a 325 degree oven. Roasting time is approximately 15 minutes per pound of turkey.
Loosely tent aluminum foil over the top of the turkey to prevent the skin from browning too quickly.
During the last hour of cooking time, remove the foil to allow the skin to become golden brown.
Continue to cook the turkey until the pop-up timer pops up or and instant read thermometer registers 165 degrees in the thickest part of the breast.
Let the turkey rest for 15 minutes once removed from the oven.
Carve the turkey and serve with your favorite sides.