01 - Preheat the oven to 400°F. Toss the pumpkin cubes with 1 tbsp olive oil and spread evenly on a baking sheet. Roast for 20-25 minutes until golden and fork-tender.
02 - In a large pot, heat the remaining olive oil over medium heat. Add the chopped onion, minced garlic, and chopped carrot. Sauté until softened, about 5 minutes.
03 - Add the roasted pumpkin to the pot along with ground cumin, nutmeg, black pepper, and a pinch of salt. Stir continuously for 2 minutes to bloom the spices and meld the flavors.
04 - Pour in the vegetable stock and bring to a boil. Reduce heat to low and simmer gently for 10 minutes, allowing the flavors to develop.
05 - Remove the pot from heat. Use an immersion blender to purée the soup directly in the pot until completely smooth, or transfer in batches to a countertop blender.
06 - Stir in the coconut milk and return to gentle heat. Adjust seasoning with salt and pepper as needed.
07 - Ladle into bowls and garnish with fresh herbs and roasted pumpkin seeds if desired. Serve hot.