Strictly Business, who is out of the Uncle Mo mare Tivoli Lass and descends from the family of Caulfield Cup winner Affinity, finished far too powerfully for her rivals and scored by 3-1/2 lengths.
The $7.50 chance defeated The Pearls ($8), who was Chris Waller's first runner in the VRC Oaks, with the Dom Sutton-trained After Summer ($31) a neck back third.
Getta Good Feeling ($1.80 fav), who comfortably accounted for Strictly Business in the Wakeful Stakes, enjoyed a good run midfield one off the fence and was presented when the runs came rounding the home turn but struggled over the final furlong to finish sixth, beaten 6-1/4 lengths.
The win was the first in the VRC Oaks for Allen, who is a neighbour of Carberry's in Ballarat, and the jockey was thrilled to celebrate it with his countryman.
"What a training performance," Allen said.
"He trains 10 horses, rides them all out himself, and to do what he's done with this filly – she basically debuted 12 days ago.
"I know she had one run last prep, but to do what he's done with the horse is an unreal training performance."
The Oaks success was another triumph for the Ballarat training community this week following on from Tuesday's Melbourne Cup success of the Tony and Calvin Mcevoy-trained Half Yours.