Fry the onion and garlic in the oil together with the specified spices, but do not let them brown. Add the pumpkin pieces and fry for another 5 minutes on a low heat. Add tomatoes and drained chickpeas. Pour in the vegetable stock and coconut milk and simmer for 15 minutes with the lid closed.
Cut the bananas into slices, add and cook for 3 minutes. Season with salt, pepper and palm sugar and garnish with chervil leaves