One of the best ways to freeze green beans is to blanch them before putting them in the freezer. Placing the raw green beans in boilable freezer bags is also a good method for preserving nutrients.
To blanch green beans, prepare them by chopping off their ends. Next, chop the green beans into smaller sections. Place the green beans into a pot of boiling water for a couple of minutes. When time is up, immediately place them in cold water to stop the cooking. Drain the water after the beans cool, and store the beans in freezer bags.
To freeze the green beans in boiling bags, prepare them the same way as the blanched beans, but do not boil them. Put butter or another fat in the bag to add flavor when they boil.