The world’s best crumble

Method

1. Preheat the oven to 200°C/fan180°C/gas 6. Peel, core and dice all the apples and place in a 1.6 litre ovenproof dish. Squeeze over the lemon juice, then carefully stir in the blackberries, sugar and spices.
2. For the crumble, in a large bowl, rub the butter into the flour to make a coarse crumbly mixture. Stir in the sugar, almonds, cinnamon and lemon zest. Chop up the marzipan and dot it evenly over the fruit in the dish, then sprinkle over the crumble mixture.
3. Put the dish on a baking sheet and bake for 45 minutes until the topping is golden and the fruit is tender and juicy. Set aside for 5 minutes, then spoon into bowls and serve with cream or custard.