Apparently (according to the above website), Indiana does not have an official desert. I’d like to nominate sugar cream pie as the official Hoosier desert. It appears on the menu or in the pie case in almost every mom n pop restaurant from one end of the state to the other, but I haven’t seen it in too many places outside of Indiana.
You beat me to it, I also was going to suggest the sugar cream pie.
I have travelled all over and RARELY have I ever found it outside of Indiana.