Tecumseh Mayor Gary McNamara says the plant's owner, Bonduelle Canada, has managed to get its equipment back up and running after Friday's fire.
McNamara says the company brought in its sanitation crew and skilled trades workers to clean and test the equipment, adding it was even running beans on the line Sunday in order to test everything.
Damage has been pegged at about $40 million but there were no injuries.
The Ontario Fire Marshal has completed its on-scene investigation but there's no immediate word on the cause of the fire.
Bonduelle said Friday that an electrical cause was suspected.
The fire led to a state of emergency and an evacuation order in the town, but both were lifted hours later.
The plant employs about 650 permanent and seasonal workers.
(CKLW, The Canadian Press)