preheat the oven to 200C/gas mark 6
prepare the stuffing by frying the onion in 50g of the butter over a very low heat, until soft
stir in the breadcrumbs, parsley, sage and orange peel and mix well
place the potatoes in a pan of cold water and bring to the boil. Drain immediately, return to the pan and add the remaining butter and stir until the butter melts
place in a roasting tin cut side down and cook for about 25 minutes until golden
remove from the oven and scoop out a teaspoon full of potato from the centre of each half
stuff each potato with some of the sage and onion mixture and continue roasting until crisp
6 servings