River Oaks Donut Shop is open for walk-ins or drive-thru from 6 a.m. to 3 p.m., seven days a week. All the doughnuts are hand-cut, but the offerings aren't limited to the eponymous item. Kolaches, fritters, cinnamon rolls and locally roasted coffee are all available as options as well. The shop's current number one item is the plain and simple glazed doughnut. The glazed donut with chocolate icing is the second most popular, while the chocolate doughnut with chocolate filling is third.