On the counter, say with peppers filling dish (6)
I believe the answer is:
stodge
'filling dish' is the definition.
(stodge means filling food)
'on the counter say with peppers' is the wordplay.
'on the counter' says the letters should be written in reverse (counter can mean in the opposite direction).
'say' becomes 'eg' (both can mean for example).
'with' means one lot of letters go next to another.
'peppers' becomes 'dots' (dot can mean to sprinkle or pepper).
'eg'+'dots'='egdots'
'egdots' backwards is 'STODGE'.
(Other definitions for stodge that I've seen before include "treacle pudding?" , "heavy fare" , "Heavy and indigestible food" , "Heavy stuff" , "Heavy meal" .)