Sauté onion, carrots, and celery until softened, about 6 to 8 minutes. Add garlic and rosemary, cook 1 minute more.
Deglaze with white wine, scraping up browned bits, and simmer 1 minute.
Add beans, sun-dried tomatoes, broth, and parmesan rind if using. Simmer uncovered 15 to 20 minutes.
Mash about a third of the beans directly in the pot to thicken the broth.
Stir in kale and simmer 3 to 5 minutes until wilted. Remove parmesan rind.
Stir in lemon juice, season to taste, and serve with bread and a drizzle of olive oil.