Gooseberry is pretty legit for a quick breakfast on the square. They have a variety of hot breakfasts and are located in the US Bank building. I typically opt for the breakfast burritos, but the true gem is their hash browns.
The space is clean and modern, although when I've gone for breakfast, it's always been empty. I imagine they get a lot more traffic for lunch, since the downtown crowd is quite big.
They regularly have Groupons and Bucky Book deals, so make sure to look for those if you plan on visiting!
The one suggestion would be to increase their coffee selections. They have regular coffee, but I didn't see cold brew or bottled coffee in the store.