0 g trans fat per serving. Freshly baked Guerero Bakery. Gluten free. Tostadas Casera are made with the highest quality white corn and are perfect for creating a variety of quick and exquisite Mexican dishes for the whole family. No matter how you enjoy them, Guerrero Tostadas Casera are golden brown, with that perfectly toasted color, and always crunchy with a thickness and wavy shape that make them unmistakably homemade.