A creamy flavoursome side-dish which allows leeks and onions to really star, but which also includes thyme, nutmeg and black pepper, wine and several different cheeses. I've included feta here as it blends so well with onions and other vegetables in pies and strudels, but if you are not fond of feta, by all means substitute it with something else such as goat's cheese or cream cheese or ricotta. Equally you could use Greek yoghurt instead of the double cream. I love the crunch of nuts in a dish like this, but if that does not appeal, and of course if some of those who'll be eating your dish have nut allergies, leave them out. Like all my recipes, this is an invitation to do with it what you will so that it meets your taste preferences.