Yummy Roast turkey crown Mary Berry shows you how to cook a roast turkey crown - deliciously flavoured with orange and thyme - in 10 easy steps. A wonderful option for Christmas dinner. To find exact turkey crown cooking times use our roast calculator. This meal, if served as 10 portions, provides 335kcal, 56g protein, 7g carbohydrate (of which 3.5g sugars), 8g fat (of which 4g saturates), 0.4g fibre and 0.9g salt per portion.