Toast your bread if desired. Then spread the vegan mayo on the bottom piece.
For all the fixings, feel free to add or subtract as much as you'd like. I found that somewhere between 1/3 to 1/2 cup for most of them was plenty.
Add the mashed potatoes and then the stuffing.
Dip a piece of bread into the gravy and cover it totally, add it on top of the stuffing. Next add the turkey, and spread the cranberry sauce on the top piece of bread. Crown your sandwich, unhinge your jaw and dig in!
You can cut this in half and share it (it's quite large) or wrap it so the fillings don't fall out.