4 large Bramley cooking apples (weighing about 900g/2lb)
1 large orange, zest and juice only
2 sprigs rosemary
140g/5oz plain flour
85g/3oz polenta (not quick-cook)
30g/1陆 oz caster sugar
55g/2oz ground almonds
110g/4oz light muscovado sugar
140g/5oz butter, cold
thick cream or custard