The onions were sold in 198-gram packages with a best-before date of May 17, 2012 (UPC 6 43550 00045 0, and lot code 51RDA1A2119).
They were sold in Ontario and possibly elsewhere in Canada, but so far there have been no reports linking them to any illnesses.
The agency also announced the recall of a number of Compliments brand salads, distributed by Sobeys Inc.
They included Compliments Garden Supreme (UPC 68820 10627), Compliments Simply Romaine (UPC 68820 10870), Compliments Harvest Romaine (UPC 68820 10871), Compliments American Blend (UPC 68820 10095), Compliments Coleslaw (UPC 68820 10097) Compliments Garden Salad (UPC 68820 12152) and Compliments Garden Salad (UPC 68820 12153).
The products were distributed nationally, except in Quebec, but no illnesses associated with them have been reported.
Food contaminated with the Listeria monocytogenes bacteria can cause listeriosis, a foodborne illness.
Listeriosis can cause high fever, severe headache, neck stiffness and nausea.
Pregnant women, the elderly and people with weakened immune systems are particularly at risk.