Watch Chef John make battered onion rings in the oven. Panko, the Japanese breadcrumbs, are the key to these baked onion rings. Chef John will share a couple other tricks and techniques that will help give you the best possible baked rings. They come out of the oven crispy with bite. Watch the video, then get Chef John's recipe for Oven-Baked Onion Rings. They’re the healthy alternative to deep-fried rings. And best of all there’s almost no mess to clean up.