Mention mash and the assumption is we are talking about potatoes. Invariably, it will be, but occasionally it is fun to fluff it up a bit and add a few extra ingredients. One favorite variation is a blend of potato with carrots and other root vegetables. Rutabaga works well in this dish, as it cooks at the same speed as the carrot. However, if you don't like rutabaga, just replace it with more carrot. This blend of potatoes and roots brings a lovely color on the plate, adds extra flavor, and of course is healthy and filling. Add to this already delicious dish some butter-cooked, caramelized melting onions, and you almost have a complete meal in one. How easy is that? If you're in the mood for a hearty side, this recipe pairs wonderfully with a whole host of mains, especially the traditional sunday roast.