300g/10oz cooking apples (such as Bramley), peeled and cut into quarters
450g/1lb fresh blackberries
400g/14oz English pears (such as Conference), peeled and cut into quarters
500g/17oz ripe plums, halved, stone removed
200g/7oz caster sugar
sunflower oil, for greasing
10 thick slices white bread, crusts removed
15驳/陆辞锄 butter