350²µ/12¼´Ç³ú broccoli, stalks and florets roughly chopped
8 cherry tomatoes, halved
1 leek, sliced
1 tsp Dijon mustard
325²µ/11½´Ç³ú pasta shells (conchiglie)
50²µ/1¾´Ç³ú plain flour
salt and freshly ground black pepper
1 tbsp breadcrumbs
pinch cayenne pepper
1 tbsp pine nuts (optional)
50²µ/1¾´Ç³ú unsalted butter
175g/6oz cheddar, grated
2 tbsp mascarpone
625ml/21fl oz semi-skimmed milk
1 tbsp grated Parmesan