Ingredients: 3-4 pound whole chicken, butterflied and dried 1 tablespoon + 1 teaspoon vegetable oil, divided 1 tablespoon unsalted butter, melted 1 teaspoon kosher salt 1 teaspoon black pepper 1/2 teaspoon garlic powder 1/2 teaspoon onion powder 4 rosemary sprigs, woody stems remo…
