The U.S. Food and Drug Administration (FDA) reports that TreeHouse Foods, Inc. has recalled frozen waffles because they have the potential to be contaminated with listeria, which can cause potentially life-threatening foodborne illness.

A large number of frozen waffle brands and varieties at stores in the U.S. and Canada are part of a voluntary recall due to possible listeria contamination.

A recall of hundreds of frozen waffle products and other toaster foods sold in many U.S. grocery stores has expanded because they may be contaminated with dangerous listeria bacteria, the manufacturer said Tuesday.