Flatter the person you've just toasted? (6,2)
I believe the answer is:
butter up
'flatter' is the definition.
(buttering up is a kind of flattering)
'person you've just toasted?' is the wordplay.
I cannot quite see how this works, but
'person' could be 'butter' (butter is a kind of person) and 'butter' is found in the answer.
The remaining letters 'up' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'the' acts as a link.
Can you help me to learn more?
(Other definitions for butter up that I've seen before include "Flatter using dairy product? (6, 2)" , "Soft-soap" , "Flatter using common dairy product" , "Flatter for a purpose" , "like 17 [SWEET TALK]" .)