Versunkener Apfelkuchen

Versunkener Apfelkuchen is the apple cake of Kaffee und Kuchen, the afternoon coffee table, and it earns its place in autumn when the stored apples are still sharp. It is strongest in the German home kitchen rather than one court or one monastery: Rhineland, Hesse, Saxony, Swabia, everyone has a springform version. No saint's day owns it. You bake it on a Wednesday if the apples are sitting there, and on Sunday nobody complains.

The regions disagree in the quiet home-baker way. In the north and west I want Boskop, firm and sour enough to stay alive against the butter crumb; in the south you see more almonds or a thin apricot glaze; sheet-cake bakers stretch the same idea onto a Blech, a baking tray, when the table is full. Im Norden anders, im Süden anders, different in the north, different in the south. I am keeping the round Rührteig, the stirred butter batter, because that is the version that shows the sunken apples best.

The cake works or fails in the stirring. Beat softened butter and sugar until pale because that trapped air is the first lift, and add room-temperature eggs one at a time because cold eggs harden the butter and break the batter. The baking powder helps, but it doesn't save a heavy batter. A packet mix gives you sweetness without structure. Five honest minutes with a mixer gives you cake.

Score the apple halves almost through and press them halfway into the batter, rounded side up. The cuts let the Boskop open as it softens, and the batter rises around the fruit instead of being flooded by it. Watch the centre between the apples, not the apple itself, because fruit stays wet even when the crumb is done. Erst verstehen, dann kochen, understand first, then cook.