Parboil the potatoes until just tender. Drain, lightly crush and toss with butter, olive oil and za’atar. Be generous and add salt and pepper. Roast at 220°C (200°C fan) until golden and crispy.
Mix the harissa, honey, lime zest and juice. Toss with the hot potatoes, cucumber and red onion.
Blend the yoghurt, feta, tahini, vinegar, salt and pepper until smooth.
Spread the whipped feta onto a plate, pile the potatoes on top and tuck in!
