White Castle is celebrating National Slider Day this year by offering members of the brand’s loyalty program “Craver Nation” a free Slider on Saturday, May 15, 2021.
Craver Nation members will receive the free Slider offer automatically through the White Castle app, while non-members can take advantage of the offer by joining for free on White Castle’s app through May 15, 2021.
The offer is valid for a free Slider of your choice – no purchase necessary – at participating locations nationwide on Saturday.
National Slider Day BOGO Delivery Deal
Additionally, participating White Castle locations will also be offering a buy-one, get-one-free deal for Combo #1 by delivery only. Fans can take advantage of the offer by ordering directly from Uber Eats or Grubhub.
White Castle introduced National Slider Day in May 2015 in honor the brand’s iconic, steamed-grilled-on-a-bed-of-onions hamburger.
Image – White Castle