•30 g unsalted butter , plus extra for greasing
• 400 g spirali
• sea salt
• freshly ground black pepper
• 1 x 150 g higher-welfare piece of cooked ham
• 80 g fontina cheese
• 80 g Taleggio cheese
• 80 g dolcelatte cheese
• 60 g Parmesan cheese
• 40 g shelled walnuts
• 20 g stale white breadcrumbs
• extra virgin olive oil