Preheat oven to 325°F (165°C). Remove the neck and giblets from the turkey cavity. Pat the turkey dry inside and out with paper towels.
In a small bowl, mix the softened butter, salt, black pepper, rosemary, and thyme.
Loosen the skin over the turkey breast and rub half of the herb butter underneath. Rub the remaining butter all over the outside of the turkey.
Stuff the turkey cavity with the quartered lemon, onion, and smashed garlic cloves. Tie the legs together with kitchen twine and tuck the wing tips under the bird.
Place the turkey breast-side up on a roasting rack inside a large roasting pan. Pour the chicken broth into the bottom of the pan.
Roast the turkey uncovered for about 3 hours, or until a meat thermometer inserted into the thickest part of the thigh registers 165°F (74°C). If the skin browns too quickly, tent loosely with aluminum foil.
Remove the turkey from the oven, transfer to a cutting board, and let it rest for 20 to 30 minutes before carving.
Notes
Ensure the turkey is fully thawed before roasting. Resting the turkey is crucial for juicy meat.