Denny's Goes Vegan / How to Order Vegan at Denny's. Jae from aveganandher joins me today as we visit Denny's. We were curious if Denny's has much vegan food on their menu, so let's find out! We're going to show you all the vegan food options at Denny's and how easy it is to order vegan at Denny's. Denny's is known for the Grand Slam, and you can't order vegan pancakes at Denny's, but they do have some decent vegan food options at Denny's to get you through a meal. We ordered the Denny's vegan burger and some fries. You can also the oatmeal with some fruit, a salad, some hash browns or some sides. All these are great way to survive being vegan at Denny's. So rest assured, if you're heading to Denny's, ordering vegan at Denny's is a lot easier than you think!