2 tablespoons oil
1 cup chopped onion
2 small celery sticks, chopped
3 medium sweet potatoes (about 1lb) peeled and cubed
1 clove garlic, chopped
3 cups vegetable broth
1 bay leaf
1 cinnamon stick
1/2 teaspoon dried basil
1 teaspoon fresh thyme (plus more for garnish)
1/4 teaspoon salt
1/2 teaspoon red pepper flakes
Cubed apples for garnish
Step 1: In a Dutch oven, saute the celery and onion in oil until tender. Add the remaining ingredients (except the apple) and bring to a boil over medium heat.
Step 2: Reduce the heat and keep the soup at a simmer for 25-30 minutes, or until the potatoes are tender.
Step 3: Discard the bay leaf and cinnamon stick. Cool slightly, then process the soup in a blender or food processor until smooth. return to a pan and heat through. Serve in bowls with garnish.