Dish out a portion of pie for the governor (6)
I believe the answer is:
pilate
'governor' is the definition.
(Pontius Pilate, Roman governor in Christ's time)
'dish out a portion of pie for the' is the wordplay.
'dish' becomes 'pie' (I've seen this before).
'out' means one lot of letters goes inside another.
'a portion of pie for' becomes 'la' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'la'+'t'='lat'
'pie' enclosing 'lat' is 'PILATE'.
Can you help me to learn more?
(Other definitions for pilate that I've seen before include "Roman who authorised the crufixion of Jesus" , "Biblical judge who asked 'What is truth'" , "Magistrate passing death sentence" , "Hand-washing Biblical judge" , "Pontius, hand-washing judge" .)