We love a good creamy soup around here, but we love an easy recipe even more. This one fits the bill on both fronts. All you do is cook the onions and leeks—think of them as onions’ mellower cousins—with some stock, then blend ‘em all up with a little cream. Instead of throwing away the dark green parts you usually don’t use, slice them thin and fry ‘em up into a next-level crispy soup accessory.