http://www.tripadvisor.com/Restauran...oh-Zurich.html
and
https://www.facebook.com/MyKitchenZurich
En Guetae!!
Tres Amigos in Oerlikon has good lunch specials
Also, Tibbits is quite popular and trendy.
In the Niederdorf area, there are cute restaurants along the way you can stumble upon
I would suggest tiffins or Tibits if your are located around the Seefeld area. If you are in Oerlikon tschingg or Rolli's Steak House are nice options.
So many options. NomNomNom
Alternatively, if you feel like splashing out a little, try Gnusserei - where Wild Boar, buffalo and zebra is on the menu. I had a buffalo steak for the first time there around a month ago, and it was one of the most innovative dishes I have come across in Zurich so far! Also being in a hollowed-out old iron foundry, the atmosphere is quite special.
It's not a budget option. They usually have two lunch menu choices including an appetizer ...with non-alcoholic beverages and a coffee with some sweets, I usually pay around 50 francs.
Beyond
Zollstrasse 208005 Zürich
It serves french fries, meat, bread and cheese products, ice cream and a cake or two.
Dull maybe but does the job if you really are hungry.
Pretty similar to most Swiss restaurants, wouldn't you say?
There are of course take aways, which you are probably referring to. But there are restaurants as well.