Heat a Dutch oven or 6 quart stock pot over medium
Add sausage and cook, breaking up the sausage into small clumps. Stir and cook until browned.
Remove from heat and drain the grease from the pan
Return the pot to medium heat and add chicken stock, potatoes, onion, seasonings, and red pepper flakes
Boil until the potatoes are fork tender, about 12 minutes
Add diced tomatoes, and kale and cook for 5 minutes. Remove from heat and stir in heavy cream. Serve with warm crusty bread.