There's no argument that Beef Stroganoff is a comfort food classic. We will argue, though, that Slow Cooker Creamy Beef Stroganoff is the easiest way to make it! Add all of your raw ingredients to the cooker with some cream of mushroom soup and beef broth, set it and leave. Everything gets infused with flavor as it simmers in the rich, creamy soup and broth mixture. All you have to do is stir in the sour cream at the end for that true Stroganoff flavor and boil some egg noodles for serving. If you want to add an extra layer of flavor, you can brown the beef first- see the tip below for how. But that's just an option, since this Slow Cooker Creamy Beef Stroganoff is delicious as is!