Foryoueats: Crockpot Tortellini Soup

1 tablespoon extra virgin olive oil

1½ pounds ground Italian sausage

1 red onion, chopped (approximately 1½ cups)

3 garlic cloves, minced (approximately 1½ teaspoons)

1 large carrot, diced (approximately 1 cup)

1 cup celery, diced

1 can (14.5 ounces) diced tomatoes, drained

4 cups chicken stock

2 cups heavy cream

2 teaspoons Italian seasoning

1 teaspoon salt

½ teaspoon pepper

½ cup parmesan cheese, shredded

3 tablespoons cornstarch

3 tablespoons water

5 ounces fresh spinach, chopped

1 package (20 ounces) cheese tortellini

Crockpot Tortellini Soup