Spoon the gravy all over the fries and top with the crayfish. Dollop 1 cup of the pimento cheese all over the fries; reserve the rest for another use. Bake the poutine for about 5 minutes ...
To serve, stack your chips high, tear up your mozzarella (if using cheese curds leave them as they are) and pile on top. Pour over your hot, thick gravy and dig in.