You sure can! Freezing crumbled feta cheese is a great way to store it for longer periods of time and keep it from spoiling quickly. The best way to freeze crumbled feta cheese is by first adding some cold water or olive oil, depending on the recipe you plan to use it for later on. This helps preserve its texture and flavor so that when you thaw and use the feta, there's no difference in quality. When freezing your feta into cubes or blocks, make sure they're wrapped tightly in cling wrap or placed in an airtight container before freezing. To ensure the safe defrosting of your frozen crumbled feta cheese once you’re ready to eat it, be sure to allow several hours of thawing in the refrigerator prior to cooking with it.