Book is describing a set heading west (towards town famous for cake) (12)

I believe the answer is:

ecclesiastes

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'towards town famous for cake' is the definition.
I can't judge whether this defines the answer.

'book is describing a set heading west' is the wordplay.
'book' becomes 'eccles' (short for Ecclesiastes, book of the Old Testament).
'describing' indicates putting letters inside (describe can mean to form the outline of).
'heading west' says the letters should be written backwards.
'set' backwards is 'tes'.
'is' going around 'a' is 'ias'.
'eccles'+'ias'+'tes'='ECCLESIASTES'

Can you help me to learn more?

(Other definitions for ecclesiastes that I've seen before include "Old Testament book that reflects on human vanity" , "OT book" .)

I've seen this clue in The Everyman puzzle in The Observer.

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