Play safe with cooking utensil (5,3)
I believe the answer is:
peter pan
'play' is the definition.
(I've seen this before)
'safe with cooking utensil' is the wordplay.
'safe' becomes 'peter' (I've seen this before).
'with' means one lot of letters go next to another.
'cooking utensil' becomes 'pan' (pan is a kind of cooking utensil).
'peter'+'pan'='PETER PAN'
(Other definitions for peter pan that I've seen before include "J M Barrie's immortal boy" , "J M Barrie's boy who never grows up" , "J M Barrie's ever-young boy" , "J. M. Barrie's hero" , ",one with youthful persona, maybe" .)