Hundreds of frozen waffle products sold in Canada and the U.S. are being recalled after possible contamination by the Listeria bacteria was detected at an Ontario facility, manufacturer TreeHouse Foods says.

Treehouse Foods Inc. has recalled dozens of frozen waffle products because of potential listeria contamination.

Treehouse Foods recalled frozen waffles due to a possible listeria outbreak in a Friday release. The brand sells items in commercial stores across the United States and Canada. The company says the issue was discovered during routine testing at their manufacturing facility this week.