Heat 2 tbsp oil in a non-stick frying pan. Tip in the onions and cook for 15 mins until caramelised – 5 mins from the end, add 2 cloves of the garlic and the chilli. Remove from the pan and set side.
Cook the bulghar wheat following pack instructions, then drain thoroughly. Mix the tahini, 1 tbsp of the lemon juice, the remaining garlic, yogurt and seasoning together, and thin with 1-2 tbsp of water.
In the onion pan, heat the remaining oil. Add the cumin seeds and coriander and fry for a min. Add the mince and fry for 5 mins until cooked through. Tip in the onion mix and heat through.
Stir the tomatoes, spring onions, parsley, remaining lemon juice and seasoning into the bulghar wheat, then spread it out on a serving dish. Top with the lamb mince and a drizzle of yogurt dressing.