Nothing fancy but will do in a pinch.
Like the name implies, La Cocina Economica is an economical place to eat. They offer Authentic Mexican food at decent prices. The food is good and I have never had a bad experience. The food is made fresh to order, so you may have to wait for 10 minutes for your order. La Cocina offers several daily specials for $4.99.
If you want something fast and inexpensive La Cocina is not a bad choice.