I guess green tomatoes are just like normal red ones but not ripe, making them kind of hard to find at the grocery store. I have good news though! If you cover red tomatoes with breading and fry them, then stick them on a sandwich with a cheese and bacon mixture, they still taste good! I got Bon Appetit on a Friday and by Saturday afternoon I was fully craving this sandwich in this month's issue.
I didn't change anything but the type of tomato so here is a direct link to the BA recipe: http://www.bonappetit.com/recipes/2013/06/grilled-pimiento-cheese-and-fried-green-tomato-sandwich-gpc