01 - Set oven temperature to 325°F and position a rack in the lower third.
02 - Remove giblets and neck from the cavity, then pat the turkey dry with paper towels.
03 - Loosen skin over the breast and spread half the butter underneath; rub remaining butter and olive oil over entire bird.
04 - Sprinkle salt, black pepper, and paprika (if using) inside and outside the turkey evenly.
05 - Fill the cavity with onions, lemon halves, garlic, rosemary, thyme, and sage.
06 - Tie legs together with kitchen twine and tuck wing tips beneath the body.
07 - Place turkey breast-side up on a rack inside a large roasting pan; pour chicken broth into the pan.
08 - Cook uncovered, basting every 45 minutes with pan juices; loosely tent with foil if skin darkens too quickly.
09 - Roast approximately 13–15 minutes per pound until thermometer inserted in thickest thigh reads 165°F.
10 - Remove from oven and let rest covered loosely with foil for 20–30 minutes before carving.