Murphy's treat, cooked (5)

I believe the answer is:

tater

'murphy's' is the definition.
(informal term for a potato)

'treat cooked' is the wordplay.
'cooked' is an anagram indicator (letters cooked into a new form).
'treat' with letters rearranged gives 'TATER'.

(Other definitions for tater that I've seen before include "Champ is mostly" , "Potato (informal)" , "Potato (colloq.)" , "found in vegetable basket" , "Murphy" .)

I've seen this clue in The Guardian.

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