To cook the red cabbage
Place the cabbage on a baking tray lined with baking paper. Combine the oil and lemon juice, coat the cabbage with the mixture, season with the za'atar and salt, cover with foil.
Roast for approx. 20 mins. in the centre of an oven preheated to 180°C. Remove the foil and cook for a further 10 mins.
Combine the yoghurt with the tahini, garlic and lemon juice, season the dressing, cover and chill until ready to serve.
Fry the halloumi in oil for 1-2 mins. on both sides. Plate up the red cabbage steaks, arrange the halloumi on top, garnish with the herbs and lemon wedges. Serve with the yoghurt dressing.