In a large pot, combine the vegetable stock, pumpkin puree, onion, garlic, thyme, and nutmeg.
Bring to a boil. Turn down the heat and simmer for 30 minutes.
Remove from the heat and use an immersion blender to blend the soup.
Season with salt and pepper.
Add the heavy cream and stir through.
Return to the stovetop and heat for 3 minutes, stirring frequently.
Portion the soup into bowls and garnish with a drizzle of additional cream and chopped fresh parsley.
Serve with nice crusty bread or rolls.