Brown ground beef in a ... filling into uncooked corn tortilla shells and fry in canola ... layer the 4 tostada shells to cover the entire ... corn chips, guacamole dip.
Heat 2 tablespoons corn oil in skillet; saute onion ... warm. Meanwhile, fry tortillas in small amount of oil ... on top of tostada bean rice layer. Garnish with ... slices and sour cream.