Remove and discard the skin from the chicken. Wash parts and pat dry. Combine the garlic and ginger and rub over the chicken. Place the chicken pieces into a 23x33cm baking dish and set aside.
Meanwhile, place the coriander, cumin, chilli and lemon juice in a blender and purée until smooth, adding some water if necessary. Set this aside for later. In a separate small bowl, combine the cashews with the cream. Mix well and pour over the chicken, then cover the baking dish with aluminium foil.
Bake chicken in preheated oven for 30 minutes, or until chicken releases its juices. Then bake, uncovered, for 15 more minutes, allowing the liquid in the dish to thicken slightly to a sauce.
Remove from oven and combine the sauce in the dish with the reserved coriander mixture. Mix this well and serve over the chicken.