1 onion - chopped

1 carrot - peeled and chopped

1 stick celery - chopped

1 clove garlic

2 tablespoons olive oil, plus more for drizzling

100g mushrooms

1 x 400g tin lentils - drained

½ red pepper - seeded and finely diced

1 teaspoon yeast extract

2 tablespoons tomato puree

500ml vegetable stock

5 medium potatoes (about 1Kg) - peeled and quartered

1 teaspoon white miso

2 tablespoons tahini

1 large knob of plant-based butter (I use Naturli)

Oat or Soy Milk

Sea salt to taste

Put the onion, carrot, celery and garlic in a food processor and pulse a few times until finely chopped. Alternatively, chop everything finely by hand

Heat the oil in a large frying pan, then add the chopped vegetables and fry, stirring occasionally over a medium heat until softened

Put the mushrooms in the food processor and chop, being careful not to chop them too fine else they will turn to mush. Add these to the pan, stir and fry for a further 8-10 minutes

Now add the drained lentils and diced pepper

In a measuring jug, mix the yeast extract and tomato puree with the hot stock, then add to the pan with the vegetables, mix, then simmer for 10-15 minutes until thickened and like a ragu

While the ragu is simmering, make the mashed potato topping

Boil the potatoes in plenty of salted water until very tender, then drain. Mash with a potato masher, or use a potato ricer to get really smooth mash

Add the miso, tahini and butter to the potato, mix well, then add milk, a little at a time, until you have creamy mash. Season with a little salt if needed

Heat the oven to 180C

Transfer the ragu to an overproof dish, then top with the mash. Finish off with a fork to create a textured topping. This will create crispy bits on top so don't skip this bit

Drizzle with a little olive oil, then bake in the oven for 25-35 minutes until bubbling. The top should be starting to brown, so to make it really crispy, place under the grill for 4-5 minutes, keeping a close eye on it

Serve with green vegetables, green salad, or home made coleslaw