01 - Heat olive oil in a large skillet over medium heat. Add sausage, breaking it up with a spatula, and cook until browned and cooked through, about 5–6 minutes. Transfer sausage to a plate and set aside.
02 - In the same skillet, add butter and onion. Sauté until onion is soft and translucent, about 3 minutes. Stir in garlic and cook for 30 seconds until fragrant.
03 - Add kale and cook, stirring, until wilted, about 2–3 minutes.
04 - Pour in chicken broth and bring to a simmer. Add gnocchi, stirring gently. Cover and cook for 3–4 minutes until tender.
05 - Return cooked sausage to the pan. Pour in heavy cream and stir to combine. Simmer for 2–3 minutes until sauce thickens slightly.
06 - Stir in Parmesan cheese. Season with salt, pepper, and red pepper flakes to taste. Serve hot, garnished with extra Parmesan if desired.