Cheesy Cauliflower & Sweet Potato Chowder

Ingredients

• 2 tablespoons extra-virgin olive oil
• 1 cup chopped onion
• ½ cup chopped carrot
• ½ cup chopped celery
• 2 cups cauliflower florets
• 1 cup diced sweet potato
• 2 teaspoons chopped fresh thyme
• 1 bay leaf
• ½ teaspoon salt
• ½ teaspoon ground pepper
• ¼ cup whole-wheat flour
• 2 cups low-sodium no-chicken broth or vegetable broth
• 2 cups reduced-fat milk
• 1 cup shredded Cheddar cheese, plus more for garnish
• ¾ cup frozen corn kernels
• 1 teaspoon white-wine vinegar