Creamy Parmesan Italian Sausage Ditalini Soup

Name: Creamy Parmesan Italian Sausage Ditalini Soup
Cuisine: European, Italian, Mediterranean
Ingredients: 1; 1 tablespoon olive oil; 1 pound Italian sausage (sweet, mild, or spicy), casings removed; 1 medium onion, finely chopped; 2 carrots, diced; 2 celery stalks, diced; 3 garlic cloves, minced; 1 teaspoon dried Italian seasoning (or a mix of basil, oregano, and thyme); 1/4 teaspoon crushed red pepper flakes (optional); 6 cups chicken broth (low-sodium); 1 cup heavy cream (or half-and-half for a lighter option); 1 cup freshly grated Parmesan cheese; For the Pasta; 1 1/2 cups ditalini pasta (or any small pasta); For Garnish; Fresh parsley, chopped; Additional Parmesan cheese; 0; 2; 3; 4