Dice the onion and chilli, grate a little ginger and roast everything together in a saucepan. Peel, dice and add the butternut squash. Pour in the vegetable stock and let everything boil until soft. Then puree with the magic wand.
Add the peanut butter and the splash of lime juice (important: it should really be the chunky peanut butter!) And stir everything well. Put the soup in plates and place a tablespoon of yogurt on top of each.