A rustic ribollita soup recipe made with sweet butternut squash, parmigiano-reggiano rinds, cannellini beans and lots of garlicky bruschetta to help mop up your bowls clean! A traditional Tuscan soup or ribollita Toscana, meaning reboiled or cooked the day before serving, ribollita is traditionally made with stale bread, black/lacinato kale and the rinds from parmigiano-reggianno cheese. So, how about a steaming hot bowl of butternut squash ribollita soup? Tough I am seeing Christmas stuff ...