If you are trying to live a greener lifestyle, you may wonder if there is anything you can do while cooking to lessen your energy usage. Below are three tips for green living to get you started. Cook More Than One Item In Your Oven At One Time If you are planning to use your oven for more than one dish, consider cooking two or more together at one time. While the cooking times on each item may increase slightly, your oven will still be used for only a fraction of the time required to cook each one individually.