Preheat fan-forced oven to 200°C.
Brush top of turkey with olive oil, salt and pepper, and place in an oven dish.
Cook for 20 minutes at 200°C.
Reduce oven to 160°C, cover with foil and cook for 35-40 minutes per kilo (approximately 2 hours and 20 mins) or until internal temperature reaches 70°C.
Remove from oven and let stand for 15 minutes prior to serving.