Place 3 pounds peeled and sliced sweet potatoes, 2 tablespoons butter, 2 diced celery stalks, 1 diced onion, ½ teaspoon salt, ½ teaspoon pepper, ¼ teaspoon dried thyme, and 4 cups vegetable broth into a crock pot.
Cover and cook on LOW for 6–8 hours or HIGH for 3–4 hours, until the sweet potatoes are tender.
Once cooked, purée the soup using an immersion blender directly in the crock pot, or carefully transfer the contents to a blender and blend until smooth.
Return the soup to the crock pot if using a blender.
Stir in 1 can (14 oz) coconut milk until fully combined.
Cover and cook on LOW for an additional 10–15 minutes, until heated through.
Serve warm and enjoy!
Notes
You can use additional broth if you do not like coconut milk in this recipe. Refrigerate any leftovers in an airtight container for up to 5 days.