Place the apples in a large ovenware dish (1.6 litre).

Squeeze over the lemon juice, then gently stir in the blackberries, sugar and spices.

For the crumble, rub in the butter, flour and oats to make a coarse crumbly mixture.

Stir in the sugar, almonds and lemon zest.

Chop up the marzipan and dot it over the fruit evenly in the dish.

Sprinkle over the crumble mixture.

Place the dish on a baking tray and bake for about 45 minutes or until the topping is golden and fruit is juicy and tender. Serve with custard or ice cream.