The one at Coal Creek (Korumburra) will not disappoint! Koonwarra Market, a bit further away, is also worthy.
There is one in Mulgrave (at the Body Shop office grounds) that is supposed to be really good and also the one at Pakenham.
I haven't heard great things about the one in Yering, but have never been, so don't mind me I'm happy to give that one a miss, anecdotally.