Gevulde Koeken (Almond-Filled Cookies)

Walk past any Dutch bakery and you will see them stacked in the window: fat, pale-gold discs the size of a coffee saucer, each one glossy with egg-wash and marked in the centre with a single almond. The gevulde koek — literally "filled cookie" — is a national fixture of the koffie-uurtje, sold everywhere from the corner bakker to the supermarket, and it is far better made at home than most people imagine.

Two things done well

There is no trick to a gevulde koek beyond doing two simple things properly. The first is the dough, a sweet, short, buttery koekdeeg that should bake tender and just crumbly, never hard. The second, and the more important, is the amandelspijs — the almond filling that gives the cookie its name and nearly all its pleasure. Made from roughly equal parts ground almond and sugar, bound with egg and rested overnight, it is softer and more fragrant than marzipan, and it is worth making yourself.

The overnight rule

That resting is the secret professionals rely on. Freshly mixed spijs is grainy and loose; a night in the fridge lets it hydrate and bind into a smooth, sliceable paste that holds its shape between the two rounds of dough. Skip that step and the filling tends to leak and the flavour never quite settles.

A gevulde koek is honest baking: good dough, good almond paste, and a single almond on top to tell you so.

The cookie belongs to the nineteenth-century rise of the professional Dutch bakery, when ground almonds became affordable enough for everyday sweets rather than festival ones. Seal the edges well, glaze the tops to a deep shine, and bake until evenly gold. Eaten slightly warm with strong coffee, the tender crust giving way to a soft almond centre, it explains its own enduring popularity in a single bite.