Over low heat, gently saute shallots, garlic, ginger and turmeric for a few minutes, until soft and fragrant. Add chilli, squash and sweet potato. With lid on, sweat the veg for ~20 minutes, stirring now and then.
When veg is slightly softer, stir in lime juice and coconut milk, plus a bit of water until veg is covered. Bring to a boil with lid off.
Reduce heat, add a large tablespoon of vegan block, cover and simmer.
Stir every 5-10 minutes until veg is very very soft.
Blend smooth, season to taste, and serve!