Is Any New Testament Book Undisputed In Its Authorship?

It seems as though every time I turn around, I find that "the majority of scholars" doubt this person wrote this gospel or letter. It seems as though no book of the NT is immune to this doubting and disputation. Doubting every single one of the books seems a bit beyond the pail to me, and suggests a real bias against giving validity to the new testament. Is there a new testament book or letter whose authorship and date are undisputed and accepted? If not, which one has the strongest argument for its authenticity?