Add everything to the slow cooker except the heavy cream, flour and cheese.
Cook on low for 6 hours.
When the cooking time is done, whisk the heavy cream and flour together. Add to the soup and stir.
Cook for 30 more minutes on high, then stir in the cheese and serve.
Video
Notes
Store any leftovers in an airtight container in the refrigerator for up to 4 days. The soup can be reheated on the stovetop or in the microwave. Just be sure to stir well to redistribute the flavors.The soup can be prepared in advance and reheated on the stove.