The financier is a lesson in restraint. Brown butter, ground nuts, egg whites, a whisper of flour. That is all. When the ingredients are good, there is nothing else to say.

Traditional financiers use almonds, but hazelnuts bring something warmer, earthier, more autumnal. The brown butter and the toasted nuts meet like old friends. Together they create a fragrance that will pull everyone in your house to the kitchen before the timer sounds.

These are not fussy cakes. Parisian bakers made them small so bankers could eat them in their offices without dirtying their suits. The shape matters less than the ratio: enough nut flour for richness, enough egg white for structure, and browned butter that does most of the work. Get the butter right and the rest follows.

Bake more than you think you need. They will be gone before they cool.