Female takes long time in cooking steak (5,6)
I believe the answer is:
filet mignon
'steak' is the definition.
(filet mignon is a kind of steak)
'female takes long time in cooking' is the wordplay.
'female' becomes 'f' (abbreviation).
'takes' means one lot of letters go next to another.
'cooking' is an anagram indicator.
'long'+'time'+'in'='longtimein'
'longtimein' anagrammed gives 'iletmignon'.
'f'+'iletmignon'='FILET MIGNON'
(Other definitions for filet mignon that I've seen before include "steak" , "Small tender boneless cut of beef" , "Tender piece of beef" .)