Male cooks dinner for one (4)
I believe the answer is:
meal
'dinner for one' is the definition.
(dinner is a kind of meal)
'male cooks' is the wordplay.
'cooks' indicates anagramming the letters.
'male' is an anagram of 'MEAL'.
(Other definitions for meal that I've seen before include "Meat and two veg plus dessert, perhaps" , "Breakfast, dinner or supper" , "Lame (anag.)" , "Eg, lunch" , "Coarsely ground grain" .)