Rest assured that your guests won't leave your party feeling hungry — these omeletlike hors d'oeuvres, not to be confused with Mexican flour tortillas, are as hearty as they are delicious.
Cooks' note:
Tortilla can be baked 1 day ahead and cooled completely, uncovered, then chilled, covered. Cut into squares, then bring to room temperature before serving or reheat to warm in a preheated 325°F oven.