Heat the grill to its highest setting. Spread the onion wedges out on a baking tray and drizzle with 1 tbsp of the oil. Grill for 3-5 mins turning halfway through, then add the tomatoes to the tray, season and grill for a further 5 mins or until juicy and popping.

Put the chickpeas in a pan with the garlic and remaining 1 tbsp oil, then heat for 5 mins before crushing the chickpeas using a potato masher. Stir through the tahini, the lemon zest and juice along with 2 tbsp water. Season.

Warm your flatbread under the grill for a couple of minutes. Top with the crushed chickpeas, then the tomato and onion mixture. Finish with the olives, feta and basil, and a drizzle of olive oil.