Cook. 3 h; Ready In. 3 h 45 m; Preheat oven to 325 degrees F (165 degrees C). Place onion, celery, and carrot in a large, shallow roasting pan. Place turkey, breast side up, on top of the vegetables in the roasting pan. Pat the outside and inside of the turkey dry with paper towels. Combine salt, black pepper and cayenne pepper in a small bowl.
https://www.allrecipes.com/recipe/222332/how-to-cook-a-turkey/