For the soup base
01 -
1 tablespoon olive oil, if needed
02 -
1 lb (450 g) mild or hot Italian sausage, casings removed
03 -
1 medium yellow onion, diced
04 -
2 medium carrots, thinly sliced
05 -
2 celery stalks, sliced
06 -
4 cloves garlic, minced
07 -
2 tablespoons tomato paste
08 -
1 1/2 teaspoons Italian seasoning
09 -
1/4 teaspoon crushed red pepper flakes, optional
10 -
1 (14.5 oz or 410 g) can diced tomatoes, undrained
11 -
5 cups (1.2 L) low-sodium chicken broth
12 -
3/4 teaspoon kosher salt, plus more to taste
13 -
1/2 teaspoon black pepper
To finish
14 -
18 oz (510 g) refrigerated cheese tortellini
15 -
3 cups (90 g) fresh baby spinach
16 -
1 cup (240 ml) heavy cream
17 -
1/2 cup (50 g) freshly grated Parmesan cheese, plus more for serving
18 -
2 tablespoons chopped fresh basil or parsley