To guarantee that this delicious casserole is gluten-free make sure to use breadcrumbs that are certified gluten-free. You can effortlessly find gluten-free breadcrumbs, in supermarkets or assemble your own by using bread that is especially made to be gluten-free. Also remember to check the tags of ingredients, like bacon bits as certain brands might contain gluten. By making these substitutions you can fully enjoy every mouthwatering bite of this dish without any concerns.