Consumed fancy pâté sandwiches you heard (3,2)
I believe the answer is:
ate up
'consumed' is the definition.
(I've seen this in another clue)
'fancy pate sandwiches you heard' is the wordplay.
'fancy' indicates anagramming the letters.
'sandwiches' indicates putting letters inside (goes on either side like a sandwich).
'you heard' becomes 'U' (homophone of 'you').
'pate' with letters rearranged gives 'atep'.
'atep' going around 'u' is 'ATE UP'.
(Other definitions for ate up that I've seen before include "preoccupied" , "Absorbed" , "Squandered" .)