Anton Brady, who has made a couple of appearances for the first team this season, opened the scoring early on before Gary Oliver equalised for the Jambos.
Brady set-up Thomas Reilly to put us back in front before the former completed a good night for himself just after the break when he rattled in the third.
Follow Mirren Mad on Facebook at http://www.facebook.com/mirrenmad
Follow Mirren Mad on Twitter @mirren_mad or http://www.twitter.com/mirren_mad