Caramel apple crumble

Ingredients: Spray oil, for spraying 750 g (1 ½ lb) Bramley Cooking apples 75 g (3 oz) unsalted vegan butter, Diced, plus extra for greasing 3 tbsp soft light brown sugar 6 whole cloves 50 g (2 oz) sultanas 75 ml (3 fl oz) cold water For the crumble topping 75 g (3 oz) rolled