Step 1

In 1 tbsp of olive oil over a medium heat, seal the chicken and transfer to the slow cooker. In the same oil, fry the onions until translucent, and add the crushed garlic, cooking for another minute. Add the onions and garlic to the chicken that's already in the slow cooker.

Step 2

In a bowl, mix together the garam masala, tumeric, curry powder, chilli powder, ginger, sugar, salt and pepper. In the same bowl, mix in the tomato puree, followed by the yoghurt and coconut milk.

Step 3

Pour the spice mixture over the chicken and onions in the slow cooker, and stir well.

Step 4

Cook on low for up to six hours. Once cooked, check the seasoning and adjust if required. Serve with plenty of chopped coriander.