Add all of the ingredients into the slow cooker except the kale and the lime. Stir to combine.
Set the slow cooker to high for 3 hours or on low for 6 hours (for high, monitor the last 30 minutes and for low, monitor the last hour). At the end, stir in the kale and the lime juice and let it cook for about 5 more minutes.
Serve with crusty bread on the side and enjoy!
Notes
Refrigerator: Transfer leftover white bean and kale soup to an airtight container and refrigerate for up to 4 days.
Freezer: Freeze this soup in an airtight container or freezer bag for up to 3 months. Thaw in the refrigerator before serving.
To reheat: Warm the soup in a pan over medium heat or in the microwave.