Adapted from: Vegetarian Times
In a large pot, heat olive oil over medium heat. Add fennel seeds and cook, stirring until fragrant, about 1-2 minutes. Next, add sweet potatoes, carrots, and apple and cook, stirring often, 5 minutes. Add broth, rice, curry powder, coriander, and bay leaf.
After all of the ingredients have been added, bring mixture to a very low boil. Cover, reduce heat and simmer until vegetables are just tender, about 20 minutes. Discard bay leaf and puree soup in batches in a food processor or with an immersion blender. Add lemon juice, salt, and freshly ground pepper to taste. Garnish with parsley.