Prepare the Vegetables: Heat the olive oil in a large pot over medium heat. Add the chopped onion and garlic, and sauté until the onion is translucent and fragrant, about 5 minutes.

Cook the Vegetables: Add the cubed pumpkin, carrot, and potato to the pot. Stir to combine with the onions and garlic. Cook for another 5 minutes, stirring occasionally.

Add the Broth and Spices: Pour in the vegetable broth, ensuring that the vegetables are fully submerged. Add the ground cumin and nutmeg. Season with salt and pepper to taste.

Simmer: Bring the mixture to a boil, then reduce the heat to low. Cover and let it simmer for 20-25 minutes, or until the vegetables are tender and easily pierced with a fork.

Blend the Soup: Using an immersion blender, blend the soup until smooth and creamy. Alternatively, you can transfer the soup in batches to a countertop blender. Be careful when blending hot liquids.

Add the Coconut Milk: Stir in the coconut milk (or cream) and let the soup simmer for an additional 5 minutes to heat through and combine the flavors.

Serve: Ladle the soup into bowls and garnish with fresh parsley or cilantro and pumpkin seeds, if using. Serve hot.