Yes, you can freeze Parmesan. In fact, freezing is a great way to cut down on your food waste. Hard cheeses like Parmesan freeze well because they have a low moisture content. Bear in mind that the texture and overall quality will degrade and you won’t have an easy time slicing them once frozen. However, you might not need to freeze your Parmesan at all, as an unopened block of parmesan cheese can last up to six months in the fridge. Due to having a low moisture content and therefore being less prone to bacteria, parmesan will keep for longer than other types of cheeses. Just check for any hardening or darkening before eating.