You can use any root vegetables and customize it to your family's preferences! Root vegetables include: potatoes, sweet potatoes, rutabaga, turnips, parsnips, carrots, onions, leeks, and more. In my root vegetable cobbler, I typically will use 2 cups sweet potato (sometimes subbing 1 cup of baby potatoes), 1 cup carrots, 1 cup onions and leeks, and 2-3 cups rutabaga, parsnips, and/or turnips. My husband loves parsnips and I prefer rutabaga, so it's a toss-up on the exact ratio, depending on how generous I'm feeling. ;)