Veggie Shepherds Pie.
For the filling
1 tbsp oil
1 leek, trimmed, finely chopped
2 carrots, peeled and finely chopped
150g/5½oz chestnut mushrooms, roughly chopped
1 large garlic clove, finely chopped
3 fresh sage leaves, roughly chopped
3 fresh thyme sprigs, leaves only, finely chopped
400g tin green or Puy lentils, drained
400g tin chopped tomatoes
200ml/7fl oz vegetable stock
200ml/7fl oz red wine
1 tbsp Worcestershire sauce (optional)
1 tbsp soy sauce
1 tsp chilli flakes (optional)
salt and freshly ground black pepper
For the topping
2 sweet potatoes (about 500g/1lb 2oz in total), peeled and cut into 2cm chunks
2 floury potatoes (about 500g/1lb 2oz in total), peeled and cut into 2cm chunks
½ small cauliflower, leaves and root removed, separated into florets
knob of unsalted butter
1 tbsp finely grated Parmesan (optional)
salt and freshly ground black pepper
Method
To make the filling, heat the oil in a frying pan over medium heat. Add the leeks and fry for 4–5 minutes, or until beginning to soften.
Add the carrots, mushrooms and garlic and continue to cook, stirring regularly, for 4–5 minutes.
Add the sage, thyme, lentils, tomatoes, stock, and red wine and stir until well combined. Bring the mixture to a boil, then reduce the heat until it is simmering and continue to simmer for 18–20 minutes while you make the topping.
Preheat the oven to 200C/180C Fan/Gas 6.
To make the topping, bring a large saucepan of water to the boil (there’s no need to add salt). Add the sweet potato and potato and boil for 10–12 minutes. Add the cauliflower and boil for a further 8–10 minutes or until tender.
Drain the vegetables well and return them to the pan. Add the butter, season well with salt and pepper, then mash until smooth. Set aside and keep warm.
Stir the Worcestershire sauce (if using), soy sauce, and chilli flakes (if using) into the filling mixture, which should have thickened during cooking. Continue to simmer for a further 1-2 minutes, adding a little water if the mixture is too dry (simmer for longer if the mixture is too watery) - season with salt and pepper.
Transfer the filling mixture to an ovenproof baking dish, then spoon over the topping and spread into an even layer. If you like a crispy topping, create peaks in the mash using a fork. Sprinkle over the Parmesan if using.
Bake the shepherd’s pie in the oven for 18–20 minutes, or until the topping is golden brown and the filling is bubblin