Method
1. Heat sunflower oil on a clean large cast iron skillet over medium heat
2. Add onion and fry until softened
3. Add Thai red curry paste, galangal and garlic clove
4. Cook while stirring occasionally - 1 min
5. Add butternut squash
6. Pour coconut cream and vegetable stock
7. Add soy sauce and salt & pepper
8. Stir while bringing to a boil
9. Transfer soup to the slow cooker bowl and cook until tender - 8 hr, low heat
10. Purée with stick blender
11. Stir coriander into the slow cooker bowl
12. Ladle soup into medium bowl
13. Garnish with coriander