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1
Grab your onion, slice off either end and remove the skin. Slice the onion into 1/2-inch slices. Once the whole onion is sliced, separate the slices into rings and discard the very centers.
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2
In a baking dish, spread out the onion and then pour over the buttermilk. Cover with plastic wrap and allow to soak in the fridge for 5-6 hours or longer, or overnight.
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3
Once the rings are soaked and you are ready to cook, preheat your oven to 400u00b0F and position your oven rack in the center position. Line a baking sheet with aluminum foil and place a baking rack on top of the baking sheet. Spray the baking rack thoroughly with nonstick spray.
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4
Grab 3 shallow bowls. In the first place the flour, salt and pepper, mix well. In the second bowl mix the beaten egg with the water. Place the panko breadcrumbs in the last bowl.
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5
Start by removing an onion ring from the buttermilk and letting the excess buttermilk drip off. Toss the onion ring in the flour mixture, followed by the egg and lastly the panko. Make sure that you press the Panko onto the onion ring so it is thoroughly coated.
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6
Once each ring is breaded, place on the baking rack and finish breading the remaining onion rings. Spray the rings thoroughly with the nonstick spray.
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7
Bake for 7-8 minutes and then flip them over and cook for another 7-8 minutes. Remove from the oven and season to taste with salt. Serve hot and crunchy!
