Place the sliced sausage, diced onion, and minced garlic in the slow cooker.
Add the drained beans, chopped kale, chicken broth, smoked paprika, and oregano.
Season with salt and black pepper, then stir everything to combine.
Cover and cook on low for 6 to 8 hours or on high for 3 to 4 hours until the kale is soft and the flavors have blended.
Stir once more before ladling into bowls.