A newer option for a quick lunch at the mall is Las Gordas de Doña Gorda, which recently opened in the space formerly occupied by Crazy Pizza. That place served pizza that was so crazy that they didn’t sell enough to warrant paying such a high overhead.
Anyway, if you are not familiar with the concept of gordas or gorditas, a word usually used to affectionately describe the wife (it means chubby, fatty and really is a term of endearment here), these are fat corn tortillas, cut in half, heated on a grill and then split so that they are hollow and can be stuffed. Fillings include things like cheese and roasted poblano chile strips, chorizo and potato, pork etc. The success or not of your gordita eating experience depends on who cooked those fillings and their degree of proficiency in making them extremely tasty.
The gordas in the mall are good, without reaching mouthgasm inducing levels of lip-smacking goodness. What makes them attractive is that they are very cheap. At about 10 pesos a pop, you can eat 3 or 4 of these and be very satisfied. Beware that the chile salsas that accompany the gordas are hot and that, in combination with the fact that the fillings are pre-cooked and kept at room temperature while they wait to be stuffed into the corn tortilla, can make your stomach have a violent reaction between 12 and 24 hours later.
Open during regular mall hours, from 10 am to 9 pm, next to Burger King in the food court on the second level of the Gran Plaza.