The whoopie pie, a baked good made of 2 cakes with a creamy frosting between them, is the official state treat.
Me. Rev. Stat. tit. 1, § 225
State treat
PL 2011, c. 29, §1 (NEW).
Official source: Maine Legislature. Reproduced from public-domain Maine statutes; confirm against the official source for the current text. Not legal advice.