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How to make Homemade Crispy Onion Rings


  • 4 large Vidalia or sweet onions, thinly sliced into rings and placed into ice water for at least 10 minutes
  • 3 tbsps cornstarch


  • 1 1/4 cup of all-purpose flour
  • 3 tbsp cornstarch
  • pinch of cayenne pepper
  • 1/2 tsp baking powder
  • 1 tsp garlic powder
  • 1/2 tsp salt
  • 1/4 tsp pepper
  • 1 1/4 cup ice cold water (adjust this amount depending on how thick you want your batter

Other Items needed:

  • Large mixing bowl filled 1/4 full of ice. (once batter is mixed, you’ll be placing that bowl into this one to keep the batter cold)
  • Oil for frying – about 1″ high in large frying pan with high sides or a pot – you can also use a deep fryer if you have it
  • Candy thermometer or deep fry thermometer – to clip to the side of your pan with the oil
  • Large cookie sheet lined with paper towel with a metal cooking rack over it. This will be used to drain any excess oil once the onion rings are cooked.
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  1. Combine dry ingredients for the batter in a medium mixing bowl. Use a whisk to combine well.
  2. Begin heating the frying oil. Make sure that your thermometer is attached to the side of your cooking vessel.
  3. While waiting for the oil to heat up to 375°F, remove the onions from the ice cold water and thoroughly dry using paper towels. It’s ok if there’s a little moisture but try to get as much of it removed as you can.
  4. In a dry mixing bowl, toss the onion slices with the 3 tbsps of cornstarch. Try to get some of the cornstarch on each of the rings.
  5. Combine the ice cold water with the dry batter ingredients. Adjust the amount of water used depending on how you like your batter. Combine using a whisk. Make sure there are no lumps.
  6. Place the bowl of mixed batter over the large mixing bowl with the ice. This is important in making sure your batter stays at the proper temperature.
  7. Once the oil has reached 375°F on the thermometer, you can begin making the onion rings.
  8. Take about a handful of onions at a time and dip them into the cold batter. Make sure that they are coated all over.
  9. Drop each ring into the oil to cook. Try to avoid having them touch each other in the beginning stages of the cooking or they’ll all stick together!
  10. Cook the rings for about 2-3 minutes, them flip over and continue cooking for an additional 1-2 minutes.
  11. Important Keep an eye on the temperature reading of thermometer while you’re frying the rings. You may need to adjust the settings on your dial a few times throughout cooking so the temperature is correct.
  12. Once the rings have finished cooking remove them from the oil and lay onto the wire cooking rack with paper towel below it to drain.
  13. Continue the batter dipping and frying process until all the batter and onions have been cooked and set on the rack to drain.
  14. Turn off the heat for your cooking oil and set the pan/pot aside in a safe place.


You can fry your onion rings in a deep fryer or in a pot on the stove. Which ever way you choose to fry the onion rings, please be sure to keep an eye on your temperatures and adjust as needed. If the  a temperature is too low, it will result in soggy, oil saturated onion rings. If the temperature is too high, you’ll burn them! 

  • Category: Side
  • Method: Frying
  • Cuisine: American