Experience involved pies and poetry (7)
I believe the answer is:
episode
'experience' is the definition.
(thesaurus)
'involved pies and poetry' is the wordplay.
'involved' indicates anagramming the letters (involved can mean confusing or complex).
'and' says to put letters next to each other.
'poetry' becomes 'ode' (ode is a type of poem).
'pies' anagrammed gives 'epis'.
'epis'+'ode'='EPISODE'
(Other definitions for episode that I've seen before include "One instalment of a series" , "One of a related series of events" , "Incident in a story or part of a serial" , "Distinctive incident" , "Incident forming part of a sequence" .)