Best market in the University of Oklahoma Student Onion.
Decent selection pre-covid. Nothing post-covid.
Union Market is great for a quick meal. The salad bar is always well-stocked, and it's a good value. There are also hot soups and a hot plate line that are different every day. You can get snacks or a meal in about 5 minutes, and it's usually faster than the other food lines in the Union.