1 1/2 quarts
(6 cups) vegetable broth
1
(15-ounce) can white beans, drained and rinsed (1 3/4 cups)
4
large round red tomatoes, chopped (4 cups)
2 cups
medium celery ribs, chopped (2/3 cup)
1/2 cup
loosely packed fresh basil leaves, chopped
1/2 cup
roughly chopped walnuts
3
medium garlic cloves, peeled and minced (1 tablespoon)
1/2 teaspoon
red pepper flakes
2 ounces
regular, whole-wheat, or gluten-free elbow macaroni
1 cup
finely grated Parmigiano-Reggiano