I'm a big fan of Sea Breeze Farm at the Ballard Farmers Market, who also run a restaurant called La Boucherie near (not technically 'on') their farm on Vashon Island:
http://seabreezefarm.net/la_boucherie.html
From their website:
"We farm it, raise it, harvest it, clean it, process it, cook it and serve it.
Our restaurant is open for lunch service Tuesday through Saturday from 12:00Pm - 2:00pm, and for dinner service from 5:30pm - 10:30pm on Fridays and Saturdays. Reservations are recommended.
For reservations, please call us at 206.567.4628(goat)."
Yelp: http://www.yelp.com/biz/la-boucherie-vashon
UrbanSpoon: http://www.urbanspoon.com/r/1/777715/restaurant/Seattle/Vashon/La-Boucherie-Vashon-Island