Nuts in Italian cooking What sorts of nuts are common in (real) Italian cooking?  

Looking online it seems that walnuts, almonds and hazelnuts figure heavily but do Italians use cashew nuts, peanuts, pistachio or other nuts?
I would say cashews and peanuts are not traditional Italian. Pistachios and hazelnuts are commonly used for desserts, think nutella for example. Pine nuts (pesto) and chestnuts are also traditional. It might not what you are looking for, but nutmeg is a common Italian spice.