3 large Granny Smith apples, peeled, cored and sliced in 1cm/陆in wedges
75g/2陆oz dried cranberries
1 large orange, zest only
陆 tsp bicarbonate of soda
200g/7oz caster sugar
225g/8oz golden caster sugar
225g/8oz self-raising flour
陆 tsp vanilla extract
butter, for greasing
225g/8oz salted butter, softened
4 free-range eggs, at room temperature
60ml/4 tbsp whole milk