Step 1: Prepare the Onions - Start by slicing your medium onion into 1/4 inch rings. Aim for even slices to ensure consistent cooking. Once sliced, separate the rings gently and set them aside.
Step 2: Soak in Buttermilk - In a mixing bowl, pour in the 2 1/4 cups of low fat buttermilk. Submerge the onion rings in the buttermilk, making sure they’re well-coated. Allow them to soak for at least 30 minutes.
Step 3: Prepare the Coating - While the onions are soaking, preheat your oven to 425°F (220°C). In another mixing bowl, combine the panko bread crumbs, Italian seasoned whole wheat bread crumbs, and crushed corn flake crumbs. Add salt to taste and mix well.
Step 4: Coat the Onion Rings - After soaking, remove the onion rings from the buttermilk, allowing excess to drip off. Dip each ring into the breadcrumb mixture, pressing gently to ensure a good coating. Place on a baking sheet lined with parchment paper.
Step 5: Spray and Bake - Give the coated onion rings a light spray with olive oil baking spray. Bake for about 20-25 minutes or until crispy and golden, flipping halfway through.
Step 6: Enjoy! - Remove from the oven and let them cool for a few minutes. Serve warm with your favorite dipping sauces.