Juicy Thanksgiving Turkey

Ingredients

• 15 pounds turkey
• 4 tablespoons Johnny's Seasoning Salt or to taste
• 1/2 cup unsalted butter room temp
• 1 tablespoon fresh thyme
• 2 tablespoons fresh rosemary
• 5 leaves fresh sage
• 4 garlic cloves minced
• 2 tablespoons olive oil
• 2 tablespoons unsalted butter
• 2 cups onion chopped
• 1 1/2 cups celery chopped
• 16 ounces stuffing mix pepperidge farm herbed
• 1 1/2 cups low sodium chicken broth