Fast food restaurants are offering healthier options, and Burger King is joining the pack with the Impossible Whopper.

» RELATED: Burger King tests Whopper made with Impossible Burger

In April, the chain began testing the vegetarian option, which features a plant-based patty with lettuce, tomatoes and pickles sandwiched between a bun.

The product was sold at 59 locations in the St. Louis area for a limited run and became a popular selection. Now, they will be available at its 7,300 outlets across the United States by the end of the year.

The Impossible Whopper seeks to target meat eaters, according to CNN. It's designed to "give somebody who wants to eat a burger every day, but doesn't necessarily want to eat beef everyday, permission to come into the restaurants more frequently," Chris Finazzo, president of Burger King North America, told the publication at the time of the initial test.

» 11 places to try the Impossible Burger in metro Atlanta

BK isn’t the first to go vegetarian. Last year, White Castle announced it would start selling the Impossible slider, and Carl’s Jr. has been offering vegetarian burgers at select locations since January.

About the Author