Herbes de Provence Roast Turkey

INGREDIENTS

• 1 fresh or thawed frozen turkey, about 16 lb.
• 1 yellow onion, quartered
• 2 celery stalks, cut into 2-inch lengths
• 3 or 4 fresh flat-leaf parsley sprigs
• 2 to 3 Tbs. herbes de Provence
• Salt and freshly ground pepper, to taste
• 4 to 6 Tbs. (1/2 to 3/4 stick) unsalted butter,
• melted