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5 from 2 votes

Onion Rings [Extra Crispy]

Prep Time5 mins
Cook Time25 mins
Total Time30 mins
Servings: 3
Author: Hungry Huy


  • 1/2 cup all-purpose flour
  • 1/4 cup cornstarch
  • 2 tablespoons instant mashed potato flakes
  • 1/8 teaspoon cayenne pepper
  • 1/4 teaspoon salt
  • 1 cup cold club soda
  • 2-3 cups panko breadcrumbs I kept needing to add more
  • 1 large onion or 2 medium onions, cut into rings
  • neutral oil for frying


  • Cut onions into rings. 1/4" works well, but you can go slightly thicker.
  • Combine flour, cornstarch, potato flakes, cayenne, and salt in a pan.
  • Add club soda and mix until dissolved. Don't worry about over-mixing, but don't spend forever trying to making it completely smooth. Prep a second pan with panko breadcrumbs with one fork for each pan and heat about ~1" of oil in a pot to 350F.
  • Dip a ring into the batter and make sure rings are completely covered inside and out, the drop into the pan of breadcrumbs.
  • Now use the dry fork to cover the ring completely, and then repeat with the remaining rings.
  • Fry the rings in 350F, working in batches. About 2-3 minutes per batch until golden brown.
  • Remove from the oil to a rack or a bed of paper towels and season with some salt while hot.