Step 1

Heat the butter in a large saucepan over medium heat. Add the onion and cook, stirring, for 3 minutes or until soft. Add the garam masala, coriander, cumin, turmeric and chilli powder. Cook, stirring, for 1 minute or until aromatic.

Step 2

Add the chicken to the pan and cook, stirring, for 5 minutes.

Step 3

Stir in the cashew, tomato puree and yoghurt. Cook for 10 minutes or until the chicken is cooked through and sauce thickens slightly. Stir in the spinach. Divide the rice among serving dishes and top with the curry to serve.