Steak 'n Shake is now ridding its buns of seed oils.

"Starting today, all Steak 'n Shake buns are officially seed-oil free," the fast-food chain announced Monday in a post on X. "The buns are now unapologetically drenched in pure Grade AA Wisconsin butter."

The bun change is the latest in a series of moves by Steak 'n Shake, which has about 400 locations nationwide, to overhaul its ingredients and align itself with the MAHA movement.

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In June, Steak 'n Shake made the switch to grass-fed beef and began frying chicken tenders, onion rings and tots in 100% beef tallow.

"In my opinion, real ingredients taste better than the synthetic additives," Michael Boes, the chain's chief MAHA officer, told Fox News.

Steak 'n Shake's burger buns are now seed-oil free. (Scott Olson/Getty Images)

The chain also has a page on its website dedicated to its transition away from seed oils and its efforts to provide more natural ingredients.

Aside from a "commitment to remove seed oils," the page touts offering cane sugar Coca-Cola and its switch to a2 milk last December.

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Reaction to the news was largely positive.

"MAKE AMERICA HEALTHY AGAIN," U.S. Rep. Nancy Mace, R-S.C., commented on X. 

Another X user wrote, "Thank you for listening to the people! Amazing."

Many people on social media have applauded the recent moves by Steak 'n Shake. (Scott Olson/Getty Images)

"I haven't enjoyed one of your burgers in quite some time," one commenter said. "I look forward to trying this change!"

Seed oils — plant-based cooking oils that are regularly used in processed and packaged foods — are a hot topic in the food and nutrition landscape.

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U.S. Health and Human Services (HSS) Secretary Robert F. Kennedy Jr. has been an outspoken critic of seed oils.

Other health agencies have said that seed oils are not so bad. The American Heart Association (AHA) stated in 2024 that "there's no reason to avoid seed oils and plenty of reasons to eat them."

Steak 'n Shake transitioned to grass-fed beef and frying foods in 100% beef tallow earlier this year. (Scott Olson/Getty Images)

Board-certified family physician Cate Shanahan told Fox News Digital in 2025 that while some seed oils, such as flax oil and sesame seed oil, have nutritional value, there are certain varieties of which people should steer clear.

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Shanahan advised that Americans try to stay away from what she calls "the hateful eight seed oils," which include corn, canola, cottonseed, soy, sunflower, safflower, rice bran and grapeseed.

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Fox News Digital reached out to Steak 'n Shake for comment.