Heat the oven to 240C/220C fan/gas 9. Cut the aubergines in half lengthways and score a diamond pattern into the flesh using a small, sharp knife, then brush over some of the oil and season with salt.Pierce the skin in a few places with a sharp knife before grilling. Roast the aubergines, cut-side down, on a baking tray for 20-25 mins until charred and collapsed. Leave to cool.

Scoop out the cooled aubergine flesh into the bowl of a food processor, then add the garlic, cumin seeds, tahini and lemon juice. Season well, then blitz to combine. With the motor running, drizzle in all but 1 tsp of the remaining oil until thick and smooth. Season to taste. Spoon into a dish, drizzle with the reserved oil, scatter with the parsley, if using, and serve with flatbreads, pittas or vegetable crudités for dunking.