I have used egg whites and almond milk, to help the seasonings stick to the onion rings and combined them with ground oatmealto lighten up this delicious recipe. The taste comes from the nice mixture of coating seasonings. Pour the buttermilk on top, making sure all of the onion rings are covered with the buttermilk. Lightened up Baked Onion Rings. I wanted something that had a crispy texture, so instead of deep frying, I chose to bake these. Separate the rings and add them to a 9x13 baking dish. https://www.food.com/recipe/simply-the-best-baked-onion-rings-82297 Cover and place onion rings in … Discard the smaller pieces or save for a later use. Slice the onions into 1/2" rings.