The National Onion Association has collaborated with a leading steakhouse chain for a promotion in early 2012.

For the first three months of the year, Black Angus Steakhouse is serving its porterhouse and T-bone steaks with caramelized onions, according to a news release from the Greeley, Colo.-based association.

This is the second year the association and Black Angus have sponsored the promotion, which is featured on menus, the company’s website and in Black Angus social media efforts.

“Caramelized onions are a popular menu item,” Kim Reddin, the association’s industry and public relations director, said in the release.

“They are simple to prepare and add value to steaks and a variety of other dishes.”

Black Angus has 46 restaurants in California, Washington, Arizona, Alaska, New Mexico and Hawaii, according to the company’s website.