Copycat Popeyes Cajun Onion Rings Recipe (Extra Crispy & Seasoned)

🛒 Ingredients

• 2 large sweet Vidalia or yellow onions, peeled and sliced into 1/2-inch thick rings
• 1 1/2 cups whole buttermilk
• 1 tbsp Louisiana-style hot sauce (like Crystal or Frank's RedHot)
• 1 1/2 cups all-purpose flour
• 1/2 cup cornstarch (essential for ultra-light shatteringly crisp crunch)
• 1 tsp baking powder
• 1 1/2 tbsp Cajun seasoning (Tony Chachere's or homemade blend)
• 1 tsp smoked paprika
• 1 tsp garlic powder
• 1/2 tsp onion powder
• 1/2 tsp cayenne pepper (adjust to your preferred heat level)
• 1/2 tsp freshly cracked black pepper and fine sea salt
• Vegetable, peanut, or canola oil (for deep frying, about 4 cups)
• -- Zesty Cajun Remoulade Dipping Sauce --
• 1/2 cup real mayonnaise
• 1 tbsp Creole mustard or whole-grain Dijon mustard
• 1 tsp fresh lemon juice
• 1 tsp Louisiana hot sauce
• 1/2 tsp Cajun seasoning
• 1 clove garlic, finely grated or minced

👩‍🍳 Step-by-Step Instructions

1. 1
   Prep & De-Membrane the Onions: Slice onions into 1/2-inch thick rounds and separate into individual rings (save small center pieces for another recipe). Peel and discard the thin, slippery inner membrane from each ring—this ensures the batter adheres perfectly and never slides off.
2. 2
   Marinate in Buttermilk: In a large bowl, whisk together the buttermilk and Louisiana hot sauce. Submerge the separated onion rings into the buttermilk mixture and let soak for at least 15 to 20 minutes to soften the sharp onion bite.
3. 3
   Mix the Cajun Dredge: In a wide shallow dish, whisk together the flour, cornstarch, baking powder, Cajun seasoning, smoked paprika, garlic powder, onion powder, cayenne pepper, black pepper, and salt until completely uniform.
4. 4
   Heat the Oil: In a heavy Dutch oven, deep skillet, or countertop fryer, heat 2 to 3 inches of oil to 365°F (185°C). Use a candy or deep-fry thermometer to monitor the temperature.
5. 5
   The Double-Dredge Process: Working in batches, lift a few onion rings from the buttermilk, letting excess drip off. Dredge thoroughly in the seasoned flour mix. Dip back briefly into the buttermilk, then coat once more in the flour, pressing lightly so craggy flakes and ridges form on the exterior.
6. 6
   Fry to Golden Perfection: Carefully lower battered rings into the hot oil without overcrowding (fry 4 to 5 rings at a time). Fry for 2 to 3 minutes, flipping once halfway, until deeply golden brown and crunchy. Use tongs or a spider skimmer to transfer to a wire cooling rack set over a baking sheet (do not drain on paper towels, which can trap steam and soften the crust).
7. 7
   Whip the Remoulade & Serve: Whisk all remoulade sauce ingredients together in a small bowl. Dust the warm onion rings with a tiny extra pinch of Cajun seasoning and serve piping hot with the chilled dipping sauce!

🥗 Nutrition Facts (Per Serving)