Slice the squash in half and remove seeds. Peel and chop the squash into 1 inch cubes.
Heat the olive oil in a large pot, and cook the onion, celery and carrots 5 minutes, or until lightly browned.
Add the squash and pour in enough of the vegetable stock to cover vegetables. Bring to a boil. Reduce heat to low, cover pot, and simmer 40 minutes, or until all vegetables are tender.
Use an immersion blender to blend the soup until smooth.
Stir in coconut milk and bring to a boil.
Serve the soup hot. Garnish with fresh cilantro leaves.
Recipe Notes
Grey Ghost Squash can be replaced with Butternut Squash