Vegetable Balti with rice and garlic naan

1 tbsp vegetable oil

1 red onion, sliced

2 garlic cloves, crushed

1 small sweet potato, peeled then cut into chunks

1 ½ tbsp Balti paste

200g cauliflower cut into florets

200g chopped tomatoes

200g chickpeas, drained

200ml hot vegetable stock

1 carrot, peeled and sliced

75g green beans

1 garlic naan

1 coriander naan

2 tbsp coriander, chopped

Low-fat natural yoghurt, to serve

Basmati rice, to serve