Preheat the oven to 180°C.
Cut the pumpkin into half and place it in an oven tray with the cut side facing up.
Peel and cut the onion into chunks and add to the pumpkin.
Peel the garlic and add to the pumpkin.
Sprinkle herbs, salt, pepper and cumin seeds over the mixture.
Drizzle with olive oil.
Place the tray in the oven and let the pumpkin roast for 20- 30 minutes or till it is done and soft.
Scoop out the pumpkin and put it in the blender.
Process the mixture.
Pour the soup into a pan and heat it over medium heat till it becomes hot.
Add lemon juice and mix well.
Serve topped with salsa.