White Castle to add veggie slider to core menu

Roughly a year after it added a Crispy Chicken Slider to its core menu, the chain will add a Southwest Veggie Slider on June 15.

• White Castle will add the Southwest Veggie Slider to its permanent menu on June 15, the company said in an emailed press release.

• The slider patty is made with a blend of sweet potatoes, black beans, corn, red bell peppers, onions and carrots with a crispy brown rice crust, and comes seasoned with smokey chipotle and sweet barbecue flavors on a slider bun with a slice of jalapeno cheese.

• White Castle began introducing new menu items last year with the addition of its Crispy Chicken Slider — the first core item added since 2022 — and has been testing a variety of new products, including Cheddar Smoked Sausage Sliders and Pretzel Nibblers .

As competition heats up amid consumer spending pullback, QSR chains are leaning into menu innovation and limited-time offers to drive guest traffic. McDonald’s added Chicken Strips and brought back its Sandwich Wraps last year and launched its Big Arch Burger LTO during the first quarter of 2026.

Burger King just brought back its crowned nuggets as its latest LTO . Wendy’s updated its chicken sandwich lineup in March.

But the addition of a veggie slider could help differentiate White Castle from competitors focused on chicken line-ups. Many chains pulled back on plant-based menu items in recent years due to a lack of consumer interest .

White Castle conducted consumer research last summer to help its innovation team determine the flavors, ingredients and profile that consumers wanted in a non-meat slider, the company said. The team decided to use a veggie patty from Dr. Praeger’s as a base for the Southwest Veggie Slider.

“Our Cravers have been pretty vocal about wanting an alternative to traditional meat Sliders that doesn’t compromise on flavor,” Jamie Richardson, White Castle’s CMO, said in a statement. "That prompted our menu innovation team to prioritize finding a craveable alternative, and we believe the Southwest Veggie Slider delivers on that in a big way.”

The Southwest Veggie Slider will be available across the chain’s 336 restaurants starting at $2.49. From July 1 to July 30, Craver Nation Rewards members will be able to order a specially priced combo meal with two veggie sliders, small fries and a small drink for $5.