wish to bake, preheat the
oven to 500°F/260°C,
preferably with a baking
stone in it, or prepare a
hot wood fire.
4 In a medium bowl,
whisk together the crème
fraîche, flour, egg yolk,
nutmeg, sea salt, and
pepper. Cut the onions in
half lengthwise (root end
to stem end), then across