Tortellini Soup with Italian Sausage

Ingredients

• 2 tablespoons extra-virgin olive oil
• 1 sweet onion, diced
• 2 carrots, peeled and diced
• 3 celery stalks, diced
• 3 garlic cloves, minced
• 1 pound Italian sausage, casings removed
• One 28-ounce can crushed tomatoes
• 4 cups chicken broth
• 1 dried bay leaf
• 1 teaspoon dried oregano
• ½ teaspoon dried thyme
• Salt and freshly ground black pepper
• 12 ounces store-bought cheese tortellini
• ¼ cup Parmesan cheese, for serving
• ¼ cup chopped fresh basil, for serving