Another great place for vegetarians is Gateway to India. They have a weekday lunch buffet that is cheap, good, and they let you know what's vegan and what is not. The mint chutney is not vegan, to note! There are a number of vegetarian and vegan options. To start, one could go with vegetable samosa, pakora, salad, or dal soup. For entree's, I like the mango vegetable, green masaala vegetable, almond vegetable, baingan bharta, or the mushroom masaala waala. One can go with roti or garlic naan without butter for a side. They also have a killer fresh mango juice and organic, vegan wine. This is a place to take someone out on a date, I think. It has a lovely atmosphere (but quiet) which would be terribly romantic!
For a complete review, please see my blog here: http://veganmiss.blogspot.com/2011/08/vegan-springfield-il-part-one.html