Step 1

Heat the oil in a large saucepan. Stir in the leeks, 2 tbsp water and some seasoning, cover, then cook for 5 mins over a medium heat until softened. Add the mushrooms and garlic, then cook for 3 mins more. Meanwhile, cook the spaghetti according to pack instructions, then drain, reserving a little of the cooking liquid.

Step 2

Stir the soft cheese into the leek and mushroom mixture, adding enough of the reserved pasta liquid to give a sauce-like consistency. Add the ham, basil leaves and Parmesan, then toss in the spaghetti.