Pre heat your oven to 180c.
Peel the outside the halved Butternut squash with a peeler (ensure the white is removed).
Add the squash halves to a roasting pan facing down and drizzle with some olive oil. Roast for on a medium heat for 20 minutes, then remove from the oven and slice carefully cut ridges with a sharp knife. Be careful not to cut right through.
Baste with oil and add garlic powder, then return to the oven. Roast for a further 40-50 minutes until tender.
To crisp up the top pop under a grill for a few minutes.
Pour over the Indian spices and serve on their own or as a side with curries, salad, chilli, etc.