At Butcher, Baker & Cake Maker at USC Village. The base is their Buttemilk Biscuit. The Holandaise and egg were spot on. I had the salmon version, which was tasty, though they do make it with either pork belly or avocado. The potatoes were flavored with a lot of dill, which was ok. However, the drink to get is their Mexican Mocha or you can get a mimosa.
Since SC graduation just happened, the place should be relatively quiet fo the next few months. So if you have the opportunity, give them the business.