This is one of our absolute favorite soups, especially in the colder months when kale is on-point and my body is craving a nice, warm supper. It’s SO good, and it makes the house smell amazing!!
In a large pot over medium heat, heat the olive oil, then add the onion and a sprinkle of sea salt, stirring occasionally and cooking until softened, about 5 minutes or so.
Stir in the garlic and crushed red pepper, and let cook for a minute or so, just until fragrant.
Add the sausage and cook, stirring often, until browned.
Add the potatoes, chicken stock and wine. Increase heat to high and bring to a boil, then reduce heat back down to med-low and let simmer for about 15 minutes, until potatoes are tender.
Stir in the cream, parmigiano reggiano and kale, letting the kale wilt for a couple minutes. Season to taste with sea salt and freshly ground black pepper.