Healthier sausage and mash

Instructions

1. Heat the oven to 170°C Fan/Gas 5. Boil the potatoes in a large pan of cold, salted water for 15 mins until tender. Drain, leave to cool then mash with the butter.
2. Meanwhile, add the sausages to a large baking tray and roast for 20 mins. Turn up the heat to 200C Fan/Gas 7. Add the onion wedges, rosemary and olive oil. Season, toss together carefully and return to the oven for 10 mins until the sausages are cooked through.
3. Meanwhile, blanch the cabbage or kale in boiling water until just tender. Drain and add to the mashed potatoes with the milk. Put back on the heat and warm gently for 2 mins, beating together well.
4. For the gravy, add the butter to a small pan with the onion and garlic, and cook over a medium heat, stirring regularly until caramelising, about 10 mins. Add the vinegar and turn up the heat, then simmer for 1 min.
5. Mix in the flour, then slowly add the stock, stirring continuously. Turn up the heat and keep stirring until thickened. Add the mustard and season.
6. Serve the mashed potatoes on plates topped with the sausages, onions and gravy.