This vegetarian enchilada casserole is an easy, flavorful meal to feed a crowd! Just like my reader-favorite mushroom enchiladas, this enchilada bake is packed with bold flavor and different textures. It's filled with roasted cauliflower florets, black beans, corn, and cheese. Prepare the filling on the stovetop, assemble the casserole, and bake it up in one hour. Both flour and corn tortillas will work!