Dish? Here’s dish with pep, possibly (9,3)
I believe the answer is:
shepherds pie
'dish?' is the definition.
(shepherd's pie is a kind of dish)
'here's dish with pep possibly' is the wordplay.
'with' means one lot of letters go next to another.
'possibly' indicates an anagram.
'heres'+'dish'+'pep'='heresdishpep'
'heresdishpep' is an anagram of 'SHEPHERDS PIE'.
(Other definitions for shepherds pie that I've seen before include "Meat and mashed potato dish" , "lunch" , "Meat-and-potato dish" , "Mashed potato and minced meat, baked" , "Minced meat dish" .)