Turkey Cheeseburger Soup

Bahan-bahan (6 porsi)

• 1/2 pound 93% lean ground turkey
• 1 tablespoon unsalted butter
• 1 medium onion, chopped
• 2 medium carrots, chopped
• 2 celery stalks, chopped
• 2 g arlic cloves, minced
• 2 tablespoons flour (all-purpose, wheat or gluten-free)
• 1/2 teaspoon kosher salt
• freshly-ground black pepper
• 3 1/2 cups low-sodium chicken broth
• 10 ounces Yukon gold potatoes (2 medium potatoes), peeled and finely diced
• 1 (12-ounce) wedge cauliflower (1/4 of a large head), stem attached
• 1 3/4 cups shredded reduced-fat sharp cheddar cheese
• 2 tablespoons chopped scallions, for garnish