You don't have to be on a low-carb or keto diet to jump on the "Chaffle" Trend--chaffles are flourless waffles made from eggs and cheese. They may be gimmicky, but they're also delicious. For our chaffle sandwiches, we've added some crumbled bacon to the batter and used the chaffles to make sandwiches, filled with avocado and tomato. Enjoy a sandwich as a low-carb breakfast that also happens to be gluten-free.