Onion Rings in the Air Fryer That Are Better Than Takeout These onion rings are super crunchy on the outside and soft in the middle, and you don't have to deep fry them or deal with the mess. Frozen onion rings won't taste the same after you make them like this. Time to get ready: 10 minutes Time to cook: 10–12 minutes Serves: 3 to 4 Things you need Two big onions cut into thick rings ½ cup of flour for all purposes Two eggs 1 cup of breadcrumbs or panko (panko makes it crunchier) ½ cup of grate