Preheat the oven to 180 degrees C
Cut the squash in half and remove the seeds
Peel off the skin with a robust peeler
Chop into bite-sized pieces
Place the squash and peppers in a large baking tray
Drizzle with 2 tablespoons oil and then mix to ensure they are covered
Roast in the oven for 30 minutes
Meanwhile heat the oil in a saucepan
Add the onion and cumin seeds and fry until onion is soft
Add the garlic, stir and cook for a couple more minutes
Add the remaining spices and stir
Add the stock and lentils and cook for a few minutes
When the roasted vegetables are ready add to the saucepan
Serve with rice and / or nan bread