For the Mexican Street Corn Tostadas: -1 batch homemade tortillas or store-bought tortillas (my favorite) -1 batch refried black beans -1 batch guacamole In a greased skillet over medium heat, place tortilla and cover until crispy, tossing after 30 seconds to 1 minute. Make your refried black beans and guacamole. Pile them up and enjoy! *Depending on how large your corn is, add more mayo and salt as desired. This dish should be on the creamer side.