Tomorrow is National Slider Day, and when it comes to sliders, no one does it like the iconic ones from White Castle. That's why in honor of the burger holiday, the popular chain is coming through with an offer that is irresistible if you're a slider fan.
As promised for tomorrow only, White Castle is giving away a free Original Slider with no purchase necessary. To take advantage of the deal, use the digital coupon on the White Castle Website and social media accounts, or enter the code SLIDERDAY on the White Castle App to redeem the offer.
The holiday itself was established in May 2015 to pay tribute to White Castle’s legendary Original Slider. The 2-by-2-inch burger, known for its steamy onions and square shape, was even named “the most influential burger of all time” by Time magazine in 2014.
Now, in 2025, the burger still serves up smiles and onion breath to anyone who loves the simplicity of a 2x2-inch burger, topped with onions, and completed with cheese if you want to spend a little extra.
More White Castle news
In other White Castle News, the chain also has another deal to help people keep a few extra dollars in their wallets. Not too long ago, they revealed a day that allows anyone interested to get six Original Sliders for $4, which, if you do the math, comes out to 67 cents a slider.
While it may not be my burger of choice all the time, White Castle cravings are real, especially late at night or when you're trying to save money. And when it comes to holidays, those are some of the best times to take advantage of free food.
So just like Harold and Kumar in Harold & Kumar Go to White Castle, be sure to plan your adventure to your local White Castle tomorrow.