pick up more of that dark onion coating. For a saltier, more robust flavor, you can use salted butter instead of unsalted, but taste before adding any extra salt since the onion soup mix is already seasoned.
To stretch the recipe for a bigger crowd, you can add up to another pound of potatoes and an extra half packet of onion soup mix, along with a tablespoon or two more melted butter, keeping the same method. If your slow cooker tends to run
