As I said last night our gorgeous risotto also had runner beans in it, yum. We grew the variety 'Enorma' and they live up to their name! I would definitely have to recommend these, even if you have a little area in the back garden - they grow up poles (we made wigwams) so they don't take too much space, the flowers are a beautiful crimson colour and the harvest is bountiful to say the least.
We planted out some we had grown in modules in May, around a bamboo cane wigwam, 6 canes - 6 plants on the outside. We also planted 6 more seeds (which are so pretty) on the inside of each cane - thus having an amazing display of 12 plants per pyramid. They have been constantly giving beans - BIG ones as the name suggests since July and look set to continue well into September if not October. We have a glut of them, (the more you pick the more they produce) but they are so nice and it's fun to give something so long and tasty to family; the plants themselves are a talking point with every visitor.
Really, I urge you to get some for next year, for the allotment or home. They are lovely steamed with a little olive oil, or butter if you're my Mother-in -Law (hehe) or in the wonderous risotto that my husband makes. There's probably loads you can do with them but I'm no cook.
I forgot to take a photo of said yummy risotto - but here is one to full that void for now, they're only wee in this pic, I'll have to update it.....