Leek & greens lasagne

Method

• step 1

  Heat oven to 200C/180C fan/ gas 6. Heat 1 tbsp oil with the butter over a medium heat. Add the bay leaf, rosemary and finely sliced leek, season and cook for a few mins until the leek has softened.

• step 2

  Add the flour and cook for 1 min more until the roux smells nutty. Take off the heat, slowly pour in the milk and whisk out any lumps.

• step 3

  Return to the heat and whisk slowly until thick and smooth, about 5 mins. Season well with grated nutmeg, then add 3/4 of the cheddar and parmesan, cooking until they are melted. Set aside.

• step 4

  In another pan, heat 2 tbsp oil over a medium heat and fry the garlic and chilli for a couple of mins until aromatic. Add the rest of the leeks, season and fry until softened, then add the mixed greens and season a little more. Cook, stirring, until the greens have wilted, about 4 mins, then pour in the wine and cook until it evaporates.

• step 5

  Oil a medium roasting tin (about 20cm square) and tip half the greens into the tin. Dot half the walnuts over the top, and nestle in a third of the artichoke hearts. Dot over half the ricotta. Remove the bay leaf from the leek bechamel and pour over a third of it. Top with three lasagne sheets to cover everything in a at layer. Repeat the process, then cover the top layer of lasagne sheets with the remaining bechamel and artichokes and scatter over the remaining cheese. Bake in the oven for 30-40 mins, until golden and bubbling. Rest for 10 mins, then serve with a sharply dressed grated carrot and beetroot salad.