01 - Bring a large pot of salted water to a boil. Cook gnocchi according to package instructions. Reserve ¼ cup pasta water, then drain and set aside.
02 - Heat olive oil in a large skillet over medium heat. Add turkey sausage and cook, breaking up with a spoon, until browned and cooked through, 5 to 6 minutes. Transfer to a plate.
03 - In the same skillet, add onion and sauté until softened, about 3 minutes. Add garlic and cook for 30 seconds until fragrant.
04 - Add chopped kale and cook, stirring occasionally, until wilted, 2 to 3 minutes.
05 - Return sausage to skillet. Pour in chicken broth, scraping up browned bits. Stir in heavy cream and parmesan cheese. Simmer gently for 2 to 3 minutes until slightly thickened.
06 - Add cooked gnocchi to skillet and toss gently to coat in sauce. Add reserved pasta water as needed to loosen consistency.
07 - Season with black pepper, red pepper flakes if using, and salt to taste. Serve immediately garnished with extra parmesan and freshly ground pepper.