Just some toffees? I'm pleading absolute property ownership! (3,6)
I believe the answer is:
fee simple
'absolute property ownership' is the definition.
'just some toffees? i'm pleading' is the wordplay.
'just some' indicates the answer is hidden within the clue.
'FEE-SIMPLE' is hidden in the letters of 'toffees im pleading'.
(Other definitions for fee simple that I've seen before include "form of inheritance" , "Absolute tenure of land with right of disposal (law)" .)