Entertaining story from date once recollected (8)
I believe the answer is:
anecdote
'entertaining story' is the definition.
(I've seen this before)
'date once recollected' is the wordplay.
'recollected' indicates an anagram (letters recollected and rearranged).
'date'+'once'='dateonce'
'dateonce' is an anagram of 'ANECDOTE'.
'from' acts as a link.
(Other definitions for anecdote that I've seen before include "One acted over interesting story" , "A short interesting story, usually true" , "Brief tale" , "Short account of an incident" , "Yarn" .)