First Watch in Clayton, MO
First Watch is mediocre at best, combine that with the Clayton airs it is very bad karma. I prefer the IHOP over First Watch.
Good diner type breakfast, go to the Majestic, not real fancy but good food. Or Courtesy Diner, that is a real greasy spoon, with slingers. Or Tiffany's or South City Diner.
For fancier breakfast/brunch, the Art Museum is good, it is a Wolfgang Puck operation. The history museum has the Patty Long brunch, which is very good too.
I didn't think it was worth the wait. It's not bad, but it's not any better then a Bob Evans or a Cracker Barrel. The food was all under seasoned.
The best brunch I've had outside of a private club in St. Louis thus far, has been at Duff's.
The art museum brunch looks really good, but it's also quite pricey.