Pasta Fazool
1 tablespoon olive oil 12 ounces sweet bulk Italian sausage 1 stalk celery, diced 1/2 yellow onion, chopped 3/4 cup dry elbow macaroni 1/4 cup tomato paste 3 cups chicken broth, or more as needed, divided alt and pepper to taste 1/4 teaspoon crushed red pepper flakes, or to taste 1/4 teaspoon dried oregano 3 cups chopped Swiss chard 1 (15 ounce) can cannellini (white kidney) beans, drained 1/4 cup grated Parmigiano-Reggiano cheese, plus additional for serving, or to taste…