This cookie-crackers, which are traditional made in Tuscany, specifically in Prato, often called cantucci di Prato. In cooking there is nothing difficult, there are several options, some add a little olive oil, someone creamy, my version - without oil. In the filling you can add different nuts, raisins, chocolate. Stored cookies for a long time, may be about a month, serve it to the sweet wine "vin santo" - almost a liqueur, not wine even, they dip them in a glass to soak and eat. But tea would be very tasty :)