12 ounces casarecce or fusilli pasta (28-oz.) can diced tomatoes 2 cups chicken broth 1/2 medium-size yellow onion, sliced 4 garlic cloves, sliced 1 teaspoon dried oregano 1/3 cup firmly packed fresh basil leaves 2 teaspoons kosher salt 1 tablespoon olive oil 1/4 teaspoon dried crushed red pepper (optional) 1 (6-oz.) package baby spinach Freshly grated Parmesan cheese

1. Place first 9 ingredients and, if desired, dried crushed red pepper in a Dutch oven in order of ingredient list. Cover and bring to a boil over medium-high heat (about 12 to 15 minutes). Reduce heat to medium-low, and cook, covered, 10 to 12 minutes or until pasta is slightly al dente, stirring at 5-minute intervals.
2. Remove from heat, and stir in spinach. Cover and let stand 10 minutes. Stir just before serving. Serve with Parmesan cheese.