Maybe the Conny-Onny Buttie is the sort of thing that is better eaten at home in one's jammies (what's the slang for jammies?), but in case anyone needs a little bit of comfort right in the middle of NYC, I found it at Saint's Alp Teahouse in Williamsburg, Brooklyn. The menu lists it as one of several varieties of Classic Toast, this version with butter.
Saint's Alp Teahouse
Williamsburg Store
164 Bedford Ave.
Brooklyn, NY
Tel: (718)486-3888
FAx: (718)486-9888
New York University Store
39 3rd Ave.,
New York, NY
Tel: (212)598-1890
Fax: (212)598-1891
Man : I can't understand how a poet like you can eat that stuff.
T. S. Eliot: Ah, but you're not a poet.