In a medium pot over medium-high heat, cook the sausage until fully browned (about 10 minutes).
Next add in the carrots and celery and sauté them for 5 minutes.
Then add in 5 cups of the bone broth and 3 cups of the beans.
Take the remaining 1 cup of broth and 2 cups of beans and blend them in the blender until smooth and creamy. Add the blended beans to the pot.
Add the garlic, herbs, spices, salt, pepper to the pot. Stir and let this simmer for 10 minutes.
After 10 minutes, add in the chopped kale and sun dried tomatoes. Stir and let the pot simmer for another 5 minutes or until the kale has wilted.
Serve the soup into bowls and let them cool slightly before serving. Serve the soup with parmesan cheese and red pepper flakes, if desired.