Heat the oven to 220C/200C fan/gas 7. Put the chipolatas in a 20 x 30cm roasting tin with the oil and bake for 15 mins until browned.
Remove the sausages from the oven – be careful because the fat will be sizzling hot – but if it isn’t, put the tin on the hob for a few minutes until it is.
Pour in the batter mix, transfer to the top shelf of the oven, then cook for 25-30 mins, until risen and golden. Serve with gravy and your favourite veg.