1. Cut each chicken breast into small chunks (roughly 2.5cm) and season generously with freshly ground black pepper. Heat 1 tbsp oil in a large nonstick frying pan or wok and fry the chicken until golden over a medium-high heat for 5-6 mins, turning occasionally. Transfer the chicken to a plate using a slotted spoon or spatula and return the pan to the heat. Keep the chicken warm by covering in foil or placing in the oven on a low heat.
2. Add the remaining oil, butter and onions to the pan and cook over a medium heat, stirring often, for 10 mins, or until the onions are soft and lightly browned. Stir in the ginger and garlic paste and ground spices and cook, stirring continuously, for a further 1 min.
3. Add the mango chutney and stock to the spiced onions and bring to a simmer. Cook for 5 mins or until the liquid has reduced by roughly half, stirring regularly. (For an extra smooth sauce, blitz the mixture with a blender.)
4. Return the chicken to the pan with the onions, add the cream and simmer gently, stirring occasionally, for 5-6 mins, until the chicken is piping hot and cooked through. Add a splash of water to loosen the sauce if necessary.
5. Garnish the curry with toasted flaked almonds and scatter with fresh coriander, if you like. Serve with freshly cooked rice.

Cook's Tips:

If you have an extensive spice cupboard, you could add 6-8 lightly crushed cardamom pods, ¼ tsp ground fenugreek, and a good pinch of ground cinnamon and ground cloves to the onions at the same time as the other spices.

For a lighter flavour, swap half the cream for natural yogurt.

For a vegetarian alternative, fry a mixture of small chestnut and thickly sliced portobello mushrooms instead of the chicken – 400g should be enough to serve four. Chunks of cooked butternut squash can be used too; instead of frying, simply add to the sauce at the same time as the cream.