This is one of my stalwart recipes that used to only make an appearance when there was a vegetarian over at my house. But then the family began to fall in love with the soft wintry flavours and that creamy white sauce. This white sauce is a shortcut white sauce, everything just gets put in a bowl and stirred, very, very simple and just as tasty as the traditional white sauce.
The perfect sausages for this dish are those from specialist Italian or Continental delicatessens, luganega, which come in one long length. If you are using ordinary sausages, add a teaspoon of fennel seeds to the onions when frying.