Quick sausage casserole

Method

1. Heat the butter in a large, deep saucepan over a low heat. Add the sliced onion and fry gently for about 20 minutes, stirring occasionally, until the onion is soft and beginning to caramelise.
2. Add the sugar to the pan, increase the heat to medium-high and cook, stirring occasionally, for another 3 minutes, until the onions are fully caramelised.
3. Reduce the heat to low again, add the garlic and tomato purée to the pan and cook for another 5 minutes. Add the stock and Worcestershire sauce, bring to the boil, and simmer for 5 minutes.
4. Add the potatoes and cook for 15 minutes, until soft. Add the cooked sausages and continue to cook for about 5 minutes, until the sausages are piping hot throughout.
5. Sprinkle with parsley and serve with greens.