Mary Berry's upside-down cake is ... fixed-base 20cm/8in cake tin. Preheat the oven to 180C/160C Fan/Gas 4. To make the apricot layer, brush the sides of the tin with the melted butter.

Mary Berry knows her stuff when it comes ... of icing sugar instead of caster sugar. The cake tasted amazing and I was surprised that the apricot jam went so well with the chocolate sponge.