Lightly dusted with powdered sugar, this is an easy dessert for any occasion. "This is my German friend Hilda's mother's recipe for Blitzkuchen mit Apfeln (German apple cake). It's a very old one.

Butter and line a 23cm/9in round cake tin. Coat the apple wedges in the lemon juice and set aside. In a large bowl, beat together the butter and sugar, using an electric hand mixer, until pale and ...