Sausages with Parsnips and Onions (4)

This is from Hugh Fearnley- Whittinstall’s ” Three Good Things”. I like to make it with Pork and Apple Sausages but any good quality pork sausage will do very nicely. You can swap the parsnips for potatoes- waxy varieties like Pink Fir Apple or Charlotte work well roasted whole in their skins.