Glut of eggs at Easter (4)
I believe the answer is:
sate
'glut' is the definition.
(I've seen this in another clue)
'of eggs at easter' is the wordplay.
'of' says the answer is hidden in the clue.
'SATE' is hidden in the letters of 'eggs at easter'.
(Other definitions for sate that I've seen before include "Malaysian dish" , "Satisfy more than fully" , "Supply to excess" , "Make content" , "Fill to satisfaction" .)