One-Pot Tomato Basil Pasta

Name: One-Pot Tomato Basil Pasta
Cuisine: Moroccan, Greek, European, Mediterranean, American, African, Southern
Ingredients: 4 cups vegetable broth; 1 pound spaghetti; 2 cups halved cherry tomatoes; 1 small yellow onion, thinly sliced; 2 garlic cloves, minced; 5 fresh basil leaves; ½ teaspoon crushed red-pepper flakes; Kosher salt and freshly ground black pepper; ¼ cup freshly grated Parmesan cheese, for serving