6 potatoes, peeled and cut into 1/2-inch cubes (2 1/2 pounds)
2 medium onions, diced
2 carrots, thinly sliced
2 celery ribs, thinly sliced
2 (14 1/2-ounce) cans low-sodium fat-free chicken broth
1 teaspoon dried basil
1 teaspoon salt
1/2 teaspoon pepper
1/4 cup all-purpose flour
1 1/2 cups fat-free half-and-half
Italian Bread Bowls
Garnish: fresh celery leaves