Wash the green beans thoroughly
Trim off the stem ends
Cut into desired lengths if needed
Blanch the beans in boiling water for 2 to 3 minutes
Transfer immediately to ice water to stop cooking
Drain and dry the beans completely
Spread the beans in a single layer on a baking sheet
Freeze until solid
Transfer the frozen beans to freezer bags or airtight containers
Remove as much air as possible
Label with the date
Store in the freezer