Refrigerate turkey and dressing, uncovered, 8 to 24 hours.
07To roast turkey with dressing: Adjust oven rack to lower-middle position and heat oven to 450°F.
08Remove broiler pan top with turkey and foil cover over roasting pan; replace broiler pan top with turkey.
09Brush turkey with melted butter.
10Place entire assembly with turkey in oven and roast until turkey skin is crisp and deep brown and instant-read thermometer reads 165 °F when inserted in thickest part of breast and 175°F in thickest part of thigh, 80 to 100 minutes, rotating pan from front to back after 40 minutes.
11Transfer broiler pan top with turkey to cutting board, tent loosely with foil, and let rest 20 minutes.
12Meanwhile, adjust oven rack to upper-middle position, place roasting pan with dressing back in oven, and bake until golden brown, about 10 minutes.
13Cool dressing 5 minutes, then spoon into bowl or onto turkey serving platter.