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