Ingredients

4 tbsp olive oil

20g butter

1 large leek, cleaned and cut into rings 250g mushrooms

(field, button or chestnut), sliced Salt and black

pepper

A few sprigs of fresh

thyme

1 heaped tbsp soft

cheese (optional)

1 heaped tbsp grated

parmesan (optional) 450g long dried

pasta (linguine, tagliatelle, penne, fusilli …)