Bacon poor as her sausage sandwiches (7)
I believe the answer is:
rashers
'bacon' is the definition.
(as in rashers of bacon)
'poor as her sausage sandwiches' is the wordplay.
'sandwiches' says the answer is hidden in the clue (the answer is sandwiched in by the clue).
'RASHERS' can be found hidden inside 'poor as her sausage'.
(Other definitions for rashers that I've seen before include "Meat slices" , "eaten at breakfast" , "Thin slices of bacon" , "Tasty strips of bacon" .)