1.5kg/3lb 5oz butternut squash, peeled, seeds removed, cut into 2cm/1in pieces
large pinch chilli flakes
10 fresh sage leaves, chopped
salt and freshly ground black pepper
60驳/2陆辞锄 butter
6 tbsp cr猫me fra卯che
40驳/1陆辞锄 Parmesan (or a similar vegetarian hard cheese), coarsley grated