Ingredients

750g chicken thigh fillets

1 brown onion, chopped

3cm piece ginger, chopped

2 cloves garlic, chopped

1 large green chilli, seeded and chopped

1 tbsp olive oil

1 tbsp butter

1/2 tsp chilli powder

1 tbsp ground cumin

1 tbsp ground coriander

1 tbsp garam masala

1 tbsp sweet paprika

5 green cardamom pods, lightly crushed

2 tbsp tomato paste

2 tsp chicken stock powder

400g an crushed tomatoes

1 tbsp cornflour

1 cup natural yoghurt

brown basmati rice, to serve

handful roughly chopped coriander

lemon wedges, to serve

Method

Heat your slow cooker to High.

Trim off all the fat from the chicken thighs and discard. Cut each thigh in half, or into thirds if large, bearing in mind that they will shrink as they cook. Refrigerate until needed.

Put the onion, ginger, garlic and chilli into a food processor and process until you have a chunky paste.

Heat the oil in a large frying pan over medium heat. Add the paste and cook for 8-10 minutes, until the liquid from the onion has evaporated and the paste looks dry. Stir through the butter and cook for a minute until the butter has melted. Stir in the chilli powder, cumin, coriander, garam masala,

paprika and cardamom pods. Add 2 tablespoons cold water and stir to incorporate any stuck-on bits. Stir in the tomato paste and stock powder, then scrape the contents of the frying pan into the bowl of the slow cooker. Add the crushed tomatoes, cornflour, yoghurt and chicken. Give everything a good stir, nudging the chicken into the sauce, then cover and cook for 2 hours.

Give it a stir, then quickly cover again to avoid losing too much heat. Cook for a further 2 hours, until the chicken is very tender and the sauce is thick.

Serve the butter chicken on brown basmati rice, garnished with chopped coriander and with lemon wedges on the side.

Serves 4.

Recipe from The Healthy Slow Cooker, by Ross Dobson. Murdoch Books. $35.