Alternatively, you can spread out the beans in a single layer on a baking sheet lined with parchment and freeze the beans for 30 minutes. (toriavey.com)
You can freeze the beans in glass containers or zip lock bags for anywhere from 6 months to a whole year (labeling with a date is a good idea in these cases). (golubkakitchen.com)
If you need a quick meal though you can use frozen beans and canned tomato sauce. (recipenomad.com)