01 - Heat olive oil in a large skillet over medium heat. Add the turkey sausage, breaking it up with a spoon, and cook until browned and fully cooked, approximately 5 to 6 minutes.
02 - Add finely chopped onion to the skillet and sauté until softened, about 3 minutes. Stir in minced garlic and cook for 1 minute until fragrant.
03 - Incorporate kale into the skillet and cook while stirring until wilted, roughly 2 minutes.
04 - Add potato gnocchi, heavy cream, and chicken broth to the skillet. Bring to a gentle simmer, cover, and cook for 4 to 5 minutes, stirring occasionally, until the gnocchi are tender and cooked through.
05 - Remove the lid, stir in grated Parmesan cheese, and season with salt, black pepper, and red pepper flakes if using. If sauce is too thick, adjust consistency with additional broth or cream as desired.
06 - Plate immediately, garnished with extra Parmesan cheese and freshly chopped parsley if preferred.