Green’s Dictionary of Slang

bake v.2

[play on roast v. (3)]

(Aus. prison) to reprimand; to criticize severely.

[Aus]Tupper & Wortley Aus. Prison Sl. Gloss. [Internet] Bake. 1. To savagely criticise someone particularly publicly; to bawl a person out; to give a dressing down. Conversely to ‘cop a bake’ or ‘baking’ is to receive a dressing down. Cognate with applying heat.