Bramley & blackberry pie - Good Food Middle East

Ingredients

• 225g cold unsalted butter, chopped into small pieces
• 350g plain flour
• 50g icing sugar
• 1 large egg yolk (save the white for brushing the pastry)
• 900g Bramley apples (about 4) peeled, cored, quartered and thinly sliced
• 140g golden caster sugar, plus extra for sprinkling
• 1 tbsp fine polenta or ground almonds
• 1 tbsp cornflour or plain flour, plus extra for dusting
• 1½ tsp ground cinnamon
• 200g blackberries, halved if very large
• egg white, for brushing (reserved from making the pastry)
• cream or ice cream, to serve