1-First Step: Prepare your oven and pans Start by preheating your oven to 425 degrees F. Line 2 baking sheets with parchment paper so the onion rings do not stick and cleanup stays easy. This temperature is hot enough to help the coating turn crisp and golden in about 17 to 20 minutes. While the oven heats, get your ingredients and bowls ready. Setting up everything before you start dipping the rings makes the whole process smoother, especially if you are making these on a busy evening.

2-Second Step: Slice and separate the onions Slice 2 large onions into rings that are about 1/4 to 1/2 inch thick. Try to keep the slices even so they bake at the same pace. Gently separate the rings and keep the smaller inner rings aside because they will cook faster than the larger ones. If you want a milder flavor, sweet onions are the best choice. White or yellow onions also work well if you like a little more bite. Avoid cutting the rings too thin, since very thin slices can dry out during baking.

3-Third Step: Set up the flour coating and batter Place 1/4 cup of the flour in a small bowl for the first coating. In a second bowl, whisk together the remaining 1/4 cup flour, milk, beaten egg, cayenne pepper, paprika, sea salt, garlic powder, onion powder, dried basil, oregano, black pepper, and thyme. Mix until you have a thick batter. The batter should be thick enough to coat the onion rings without running off too quickly. If it seems too loose, let it sit for a minute before dipping the onions.

4-Fourth Step: Coat each onion ring Dip each onion ring into the plain flour first. Shake off any extra flour so the batter will stick evenly. Then dip the ring into the seasoned batter and let the excess drip off for about 5 to 10 seconds. After that, coat the ring thoroughly in breadcrumbs, preferably Panko. Press lightly so the crumbs stick all over the surface. This step is what gives you that crisp finish after baking.

5-Fifth Step: Arrange and bake Place the coated onion rings on the prepared baking sheets in a single layer. Leave a little space between each ring so the hot air can move around them. If the rings are crowded, they are more likely to soften instead of crisp up. Bake for 17 to 20 minutes, flipping the rings at the 10-minute mark. Smaller inner rings may be done a bit sooner, so watch those closely. They should look golden and crisp when ready.

6-Final Step: Serve while hot Remove the onion rings from the oven and let them rest for a minute or two before serving. They are best enjoyed hot, when the coating is crisp and the onion inside is tender. Serve them with ketchup, ranch, or your favorite dip. For a full meal, try serving these alongside a hearty dinner like creamy chicken and broccoli pasta for a fun mix of creamy and crunchy textures.