I'll be there. My first exposure to Bluegrass was their Lake County Restaurant Week promotion last year. It was a similar three course lunch with one of the choices then being their Crusty Blue BBQ Burger. I'm so glad I chose it because it became my favorite cheeseburger. For dessert I chose Bananas Foster which was excellent.
A few friends and I have been sampling recommended cheeseburgers in the burbs for a few years. Recently we've sampled some of Nick Kindelsperger's recommendations in the Chicago Tribune:
https://www.chicagotribune.com/dining/c ... -list.html We loved the cheeseburger at Vistro in Hinsdale which Nick rated number two and we thought it was better than his number one rated Edzo's in Evanston. While Edzo's was quite good, we found their burger, fries and shake to be a bit better than a similar meal at Steak 'N Shake at more than twice the price. And, Edzo's is a dive, self-service, not clean, and parking is difficult. I would rate the Bluegrass burger above these. I've been back for it several times in the past year.
I look forward to seeing the usual suspects at Bluegrass.