For the pastry
350g self-raising flour, plus extra
for dusting
100g cornflour
Pinch of salt
350g butter, chopped, at room temperature, but not very soft, plus extra for greasing
100g golden caster sugar, plus extra for dusting
2 large free-range egg yolks
For the filling
1.25kg eating apples, such as Cox’s
2 large free-range eggs
100g golden caster sugar
1 tbsp self-raising flour
300ml soured cream
½ small whole nutmeg, finely grated
Crème fraîche or fresh vanilla custard to serve