This recipe is naturally gluten free as written, provided all packaged ingredients are certified gluten free. Be sure to check the labels on the bacon, cottage cheese, shredded Gruyere, and cooking spray for any hidden gluten, additives, or cross-contact warnings. Some processed bacon products may contain flavorings or preservatives that are not gluten free, so label-checking is especially important. No flour or bread-based ingredients are used in this recipe, so no substitutions are needed.