Cook 2 cups rotini pasta in a pot of boiling water until al dente (tender but still firm). Drain and set aside 2 cups cooked pasta for this recipe.
Add ½ cup diced yellow onion to the pot along with 3 minced garlic cloves. Cook 1 minute, until onion turns translucent.
Now add in 2 chopped celery stalks along with a splash of the beef broth. Cook 2 minutes to allow celery to soften.
Add the rest of the carton of beef broth along with 1 teaspoon Italian seasoning, 15 oz crushed tomatoes, 15 oz tomato sauce, ½ teaspoon salt and ¼ teaspoon ground black pepper. Stir together.
Next add back in the cooked 1 lb Italian-style meatballs and 2 cups cooked rotini pasta. Bring the pot to a simmer and cook for 3-5 minutes until heated through.
Scoop into bowls and serve with freshly grated parmesan cheese on top.