Vegetable jalfrezi

Name: Vegetable jalfrezi
Ingredients: 1 tbsp sunflower oil; 2 red onions, thinly sliced; ½ 350g jar jalfrezi curry paste (we used Geeta's); ½ butternut squash, cut into chunks; 1 small head cauliflower, broken into florets; 1 vegetable stock cube; bunch coriander leaves, picked and stalks finely chopped; 500ml passata; 1 red pepper, sliced; 1 yellow pepper, sliced; 400g can chickpea, drained and rinsed; 100g natural yogurt; 1 fresh green chilli, sliced; boiled rice, to serve; naan bread, to serve