I had to google roast potatoes to find out what it was. It looks like glorified tater tots, to me!

But keep in mind that all I eat is pizza and ice cream so I'm not exactly the best person to ask about this sort of thing

EDIT: Wait, I was browsing google images and I think I've had those before. My mom made them sometimes. Just not for thanksgiving; my family traditionally had mashed potatoes. I'm sure everyone does it differently, though!