USA Today had a poll of the best restaurants in the area and the results were...not particularly good. The results remind me a bit of Yelp, where it's less about the best food and more about where the most people have been to. I'm pretty sure Hy-Vee does not have the second best Asian food in the area. :)
On the flip side though, there were many locations mentioned that I haven't been to in the Des Moines area that I was hoping others could inform me as to whether they are worth the time. The restaurants/bars include.
300 Craft & rooftop
Big Al's BBQ
Fuzy's Taco Shop
Old West Mexican Restaurant