Hash Brown Potato Soup uses bagged, loose frozen hash browns rather than the formed hash brown patties. Bagged hash browns come either diced or shredded. This recipe uses unseasoned diced hash browns since they are closest to chopped fresh potatoes usually used in potato soup. If you don't care about the consistency of the potatoes, feel free to use shredded. If preferred, you can keep blending with the immersion blender until all of the potatoes are smooth and no shreds are left.