What do you mean by depending on what I'm roasting? I was just gona slice them in half. Won't be adding anything to them though, they are about the only veg my nephew likes and I wouldn't want to put him off by adding anything.
1. Preheat oven to 220°C (Gas Mark 7).
2. Roast for 30 minutes at 220°C (Gas Mark 7).
3. Reduce oven temperature to 160 °C (Gas Mark 3) and continue to roast for:
Rare – 20 minutes per Kg (9 minutes per pound)
Medium – 30 minutes per Kg (14 minutes per pound)
Well Done – 40 minutes per Kg (18 minutes per pound)
4. Remove the joint from the oven and rest for 20-30 minutes before carving.
4 is crucial......lets the meat rest - cover with some foil and then a tea towel.