One covered in whipped cream gets adult in a state (7)
I believe the answer is:
america
'state' is the definition.
(I know that America is North American country)
'one covered in whipped cream gets adult' is the wordplay.
'one' becomes 'i' (Roman numeral).
'covered in' means one lot of letters goes inside another.
'whipped' indicates an anagram.
'gets' means one lot of letters go next to another.
'adult' becomes 'a' (abbreviation).
'cream' is an anagram of 'amerc'.
'i' placed into 'amerc' is 'americ'.
'americ'+'a'='AMERICA'
'in a' acts as a link.
(Other definitions for america that I've seen before include "Care and aim badly for the continent" , "Continent named after Vespucci" , "Camera I take to the continent, oddly" , "Name of two continents" , "The superpower" .)