Editor's note: The recipe and introductory text below are from Feast: Food to Celebrate Life, by Nigella Lawson.
Strictly speaking, I don't think of this as a casserole, but I know that this is the traditional nomenclature; and, besides, I do sometimes serve the beans in one so it seems silly to quibble.
This is another recipe I'd never have thought of adding to my Christmas till I started cooking for Thanksgiving, but I love its fresh, citrussy crunch. Actually, all I've done is bring on board an amplification of the way my mother always cooked green beans: just plenty of butter, plenty of pepper, and vicious amounts of lemon.
