Greek bread once provided by church, intervening in crisis? (7)
I believe the answer is:
drachma
'greek bread once' is the definition.
(former Greek currency - 'bread' is slang for money)
'church intervening in crisis?' is the wordplay.
'church' becomes 'ch' (common abbreviation).
'intervening in' means one lot of letters goes inside another.
'crisis?' becomes 'drama' (I've seen this before).
'ch' going into 'drama' is 'DRACHMA'.
'provided by' acts as a link.
(Other definitions for drachma that I've seen before include "European currency replaced by the euro in 2002" , "Old Greek currency" , "Old Greek coin" , "Former Greek currency unit" , "ready" .)