Hannaford Bros. Co. is recalling its Hannaford Blueberry Muffin Mix sold in 18.25-ounce boxes because it may contain undeclared milk. People who have allergies related to milk may run the risk of serious or life-threatening reaction if they consume this product.

The recalled mix was sold in stores in Maine, Massachusetts, New Hampshire, Vermont and New York. The muffin mix has been removed from store shelves. No illnesses have been reported to date in connection with the problem.

Consumers who have purchased the Hannaford muffin mix should return any unused portion to their nearest Hannaford store for a full refund.