Pre-heat the oven to 180°C.
Place potatoes in a microwavable bowl and microwave for 3 minutes to soften slightly. Meanwhile, mix all the spices in a bowl.
Into the potatoes, add the chopped onion and spices. Mix thoroughly. Place on a baking tray and spray with low calorie cooking spray.
Place in the oven for 10 minutes. After this time, remove from the oven, turn the potatoes and spray again with low calorie cooking spray. Cooking for a further 5-7 minutes until crispy and golden.