Meals the queen found a problem (6)
I believe the answer is:
teaser
'a problem' is the definition.
(I've seen this before)
'meals the queen' is the wordplay.
'meals' becomes 'teas' (tea is a kind of meal).
'the queen' becomes 'ER' (short for Elizabeth Regina ie Queen Elizabeth).
'teas'+'er'='TEASER'
'found' acts as a link.
(Other definitions for teaser that I've seen before include "One who irritates playfully" , "Difficult problem concerning Easter" , "Introduction to arouse curiosity" , "inducement" , "Easter (anag) - puzzle" .)