Always-Tender Roasted Turkey Recipe

In a small bowl, combine butter and garlic. Pat turkey dry. Carefully loosen skin of turkey; rub butter mixture under the skin. Sprinkle salt and pepper over skin of turkey and inside cavity. Skewer turkey openings; tie drumsticks together. Place flour in oven bag and shake to coat. Place oven bag in a roasting pan; add celery and onions. Place turkey, breast side up, over vegetables. Cut six 1/2-in. slits in top of bag; close bag with tie provided. Bake at 350 ° for 3 to 3-1/2 hours or until a meat thermometer reads 180 °. Let stand for 15 minutes before carving. Skim fat and thicken drippings if desired. If preparing turkey the day before, pour drippings into a measuring cup; skim fat. Arrange slices in an ungreased shallow roasting pan; pour drippings over turkey. Cool completely. Cover and refrigerate overnight. The next day, bake at 350 ° for 45-65 minutes or until heated through.