Not only is pre-shredded cheese from the supermarket expensive, it also comes packaged in hard-to-recycle plastic. One way to go green and save money is to buy blocks of cheese from the cheese counter and shred it yourself. To save time, shred the entire block of cheese at one time and store it in a large freezer bag. To prevent it from sticking together, add a tablespoon of cornstarch to the freezer bag and shake. The cornstarch will lightly coat the cheese and prevent sticking and will also help keep it fresher longer. Store it in the freezer and use the cheese as needed.