Preheat the oven
to 160C/325F/Gas 3. line two 23cm/9in cake tins
with greaseproof paper and grease the paper.
Finely chop the
nuts. Reserve 25ml tbsp of them and place the rest
in a mixing bowl. Sift over the flour, baking powder
and salt and stir.
Peel and core the
apples. Cut into 3mm dice, then stir into the flour
mixture.
Beat the eggs
until frothy. Gradually add the sugar and vanilla
and beat until ribbon trails form, about 8 minutes.
Fold in the flour mixture.
Pour into the
cake tins and bake until a skewer inserted in the
centre comes out clean, about 35 minutes. Leave to
stand for 10 minutes, then turn out on to a wire
rack to cool.
Whip the cream
until firm. Use half for the filling. Pipe rosettes
on the top and sprinkle over the reserved nuts.