You'll be surprised to learn that it's actually quite simple to make these scrumptious Chocolate Chocolate Chip Gooey Bars gluten-free! The trick lies in the base; just replace the Devil's Food cake mix with a gluten-free chocolate cake mix. Nowadays gluten-free mixes have greatly improved in both taste and texture so you won't miss out on that chocolaty foundation. Also make sure your chocolate chips and Hershey's bars are gluten-free – many brands offer gluten-free options but it's always wise to check. Lastly when it comes to the hot fudge sauce choose one that is labeled as gluten-free for added peace of mind.