Monsters finishing turnover with fresh filling (5)
I believe the answer is:
ogres
'monsters' is the definition.
(ogre is a type of monster)
'finishing turnover with fresh filling' is the wordplay.
'finishing turnover with' becomes 'og' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'filling' means to look at the middle letters (the letters which fill the word).
The middle letters of 'fresh' are 'res'.
'og'+'res'='OGRES'
Can you help me to learn more?
(Other definitions for ogres that I've seen before include "huge figures" , "She-giant of fairy tale" , "Giant types" , "Awful brutes" , "Beasts" .)