In a large Dutch oven set over medium heat, heat the oil until shimmering. Add the sausage and cook until browned, about 5 minutes, breaking it up with a wooden spoon.
2 tablespoons olive oil, 1 pound ground Italian or pork sausage
Stir in the onion, carrots, and celery and cook until slightly softened, about 5 minutes.
1 yellow onion, 2 carrots, 2 ribs celery
Add the garlic and cook for 30 seconds, until fragrant. Season with salt and pepper, then add in the beans, diced tomatoes, tomato sauce, chicken broth, Italian seasoning, and rosemary. Bring to a boil, then stir in the ditalini.
4 cloves garlic, Kosher salt and freshly ground black pepper, 5 cups low-sodium chicken broth, 15 ounces great Northern beans, 15 ounces kidney beans, 15 ounces diced tomatoes, 8 ounces tomato sauce, 2 teaspoons Italian seasoning, 2 sprigs fresh rosemary, 1½ cups dry ditalini pasta
Reduce heat to medium and cook for 8-10 minutes, or until pasta is al dente. Taste and adjust seasoning if necessary. Remove the rosemary and discard.
Serve garnished with Parmesan and parsley.
Grated Parmesan cheese, Fresh parsley