Roast rhubarb and apple crumble

Preheat the oven to 220°C (425°F, gas mark 7). Place the rhubarb, apples and caster sugar in a large roasting tin and roast for 20 mins until softened and lightly charred.

Place the butter and flour in a food processor and whizz until the mixture resembles fine breadcrumbs. Mix in the remaining ingredients.

Spoon the cooked fruit into a baking dish and scatter over the crumble mixture. Bake for 15-20 mins until golden. Delicious served with crème fraîche.