If you don’t have an immersion blender, puree this in batches using a regular blender or a food processor.
This recipe is made up largely of potatoes, and potatoes need a lot of salt. If it tastes bland to you at the end, just keep adding salt until it’s seasoned just right!
Find it online: https://www.thegarlicdiaries.com/roasted-potato-and-fennel-soup/