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