Creativity of that bloke is shown in pastry (3,4)
I believe the answer is:
the arts
'creativity' is the definition.
(creative arts)
'that bloke is shown in pastry' is the wordplay.
I cannot quite see how this works, but
'bloke' could be 'he' ('he' refers to a man) and 'he' is found in the answer.
'pastry' could be 'tarts' (tart is a type of pastry product) and 'tarts' is located in the leftover letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
'of' is the link.
(Another definition for the arts that I've seen is " Culture".)