Heat olive oil & butter in a pot.
Sauté onion until soft, then add garlic & red pepper flakes.
Pour in broth, add white beans, thyme, salt & pepper.
Simmer 5 min.
Stir in kale & cook for 5 more min.
Finish with lemon zest & juice, then stir in Parmesan.
Adjust seasoning & serve!
