Food a couple of months ago Share Tweet Pin Share Burger King will celebrate National Donut Day this year by introducing the first-ever Whopper Donut. The fast food chain has described the new donut as “flame-grilled” and is admittedly more burger than a donut, simply taking the prototypical Whopper and adding a center hole. The Whopper Donut will be available on June 1 for one day only alongside its donut hole, which will come served on the side as a free slider. Are you interested in trying the festive Whopper Donut? Share your thoughts below. In National Donut Day news, Krispy Kreme will be giving away free doughnuts.