You can rinse them off and eat them raw, I like to snack on them with other chilled veggies for lunch. I snip the end and pull off the stringy fiber at the curved end.
They cook up nicely in a stir fry - they don't need much cooking time so add them at the very end and cook for 1 and a half minutes to keep their crunch.
I also nuke them in a glass dish - rinse and keep just a little bit of water in the covered dish - again for no more than a minute and a half - cook in 30 second intervals until you get them the consistency you like them add but be careful as once you over cook them and they get wrinkly - they get mushy and are not so good. Add a little shredded parmesan cheese on top or add them to some sauted red bell peppers.
They are a nice addition to a veggie combo mix - sauted yellow squash, carrot strips, sugar snaps, colored bell peppers.
Since they overcook easily, I don't like them in something that has alot of liquid in them - soups and such.