Green’s Dictionary of Slang

(Aus./NZ) a meat pie.

1988		Bulletin issues 5626-33 105/2: We gave our first lesson on dinki-di slang [...] Dog’s eye: Pie, with or without dead horse.
1999		G. Seal Lingo 88: a dog’s eye and dead horse. A pie and sauce, of course [...] rhyming slang for this peculiarly Australian repast.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] : dog’s eye n. a mince pie.
2021		Betoota-isms 245: ‘Got stung at the footy, had to cough up $7.50 for a Dog’s Eye and sauce’.