Step 1

Heat butter in a large soup pot over medium heat. Add the onion, and cook until soft. Then add the sausage and cook until browned.

Step 2

Add in the garlic, fennel, red pepper flakes, Italian seasoning and salt and stir well. Add in diced tomatoes and chicken broth. Bring to a boil, then reduce heat and simmer for 10 minutes.

Step 3

Add in the gnocchi and kale and continue cooking for another 5-7 minutes. Remove from heat and serve with parmesan cheese.