Directions

1. Place salt, brown sugar, garlic powder and dried rosemary in a small bowl. Work with fingers until incorporated. Place turkey on a wire rack set inside a rimmed baking sheet. Sprinkle and pat brine all over outside and inside of turkey, nudging some into crevices. Chill bird, uncovered, for at least 12 hours and up to 2 days.
2. Remove turkey from rack and rinse baking dish. Line with 3 layers of aluminum foil and set rack back inside. Place turkey, breast side up, on rack and tuck wings underneath. Allow turkey to sit at room temperature for 2-3 hours.
3. Preheat oven to 450 degrees. Loosen skin on turkey breasts and spread 2 tablespoons of butter underneath skin atop both breasts. Smear outside of turkey with another 2 tablespoons of butter.