Cut the pumpkin in halves and remove the seeds with a spoon. Put a little oil, salt and pepper on them. Place them with the cut side down on a baking tray and put them in the oven at about 200°C for 30min.
Dice the onion and garlic very finely. Fry onions and garlic in vegetable oil until translucent.
Add the vegetable stock and orange juice and let simmer.
Take the pumpkin out of the oven and spoon out of skin. Add pumpkin into the soup and mix and mash using a whisk.
Let simmer until you reach your preferred consistency. Optionally, add some cream to the soup.
Season to taste with salt, pepper, mixed spice, cinnamon and a few chilli flakes.