In a large stock pot over medium high heat, add italian sausage. Cook and crumble until no longer pink. Then remove to a bowl and keep warm. (DO NOT clean out or discard any grease left in the pot).
Add butter to pot and once melted add carrots, celery, onion, garlic, and potatoes. Sprinkle with salt and pepper. Saute for around 5 minutes (onions should start to become translucent).
In a large measuring cup, combine, milk, broth, cornstarch and remaining seasoning.
Reduce heat under pot to medium and stir in milk mixture. Let come to a bubble and then return sausage back to pan. Let cook for 15 minutes.
Add heavy cream and parmesan cheese. Once the soup is bubbling again, add tortellini. Let cook another 15 minutes.
Lastly, stir in kale and then remove soup from heat. Let sit for 5 minutes before serving.
Keyword carrots, celery, cheese tortellini, grated parmesan, heavy cream, Italian Sausage, kale, potato