Crispy battered cod onion rings: Prepare to embark on a culinary adventure that will redefine your perception of seafood and onion rings! Imagine sinking your teeth into perfectly golden, crispy rings, each bite a symphony of flaky cod and sweet, caramelized onion. This isn’t your average pub fare; it’s an elevated experience that’s surprisingly easy to create at home.
While the exact origins of combining cod and onion rings in this specific way are somewhat shrouded in mystery, the concept draws inspiration from the classic British fish and chips, a beloved dish with roots tracing back to the mid-19th century. The addition of onion rings, a popular side dish in many cultures, adds a touch of sweetness and textural contrast that elevates the entire experience. Think of it as a modern twist on a timeless favorite!
People adore this dish for its delightful combination of flavors and textures. The crispy batter provides a satisfying crunch, while the tender cod and sweet onion offer a melt-in-your-mouth sensation. Plus, crispy battered cod onion rings are incredibly versatile. Serve them as an appetizer at your next gathering, enjoy them as a satisfying weeknight meal, or even pack them in a lunchbox for a gourmet treat. The possibilities are endless! So, are you ready to ditch the ordinary and embrace the extraordinary? Let’s get cooking!

Ingredients:
- For the Crispy Battered Cod:
- 1.5 lbs Cod fillets, skinless and boneless, cut into 2-inch pieces
- 1 cup All-purpose flour
- 1/2 cup Cornstarch
- 1 tsp Baking powder
- 1/2 tsp Baking soda
- 1 tsp Salt
- 1/2 tsp Black pepper
- 1/4 tsp Garlic powder
- 1/4 tsp Onion powder
- 1 cup Cold club soda or sparkling water
- 1 large Egg, lightly beaten
- Vegetable oil, for frying
- For the Onion Rings:
- 2 large Yellow onions, sliced into 1/2-inch thick rings
- 1 cup All-purpose flour
- 1/2 cup Cornstarch
- 1 tsp Baking powder
- 1/2 tsp Salt
- 1/4 tsp Black pepper
- 1 cup Cold milk (or buttermilk for extra tang)
- Vegetable oil, for frying
- Optional Dipping Sauce:
- 1/2 cup Mayonnaise
- 2 tbsp Ketchup
- 1 tbsp Sweet pickle relish
- 1 tsp Dijon mustard
- 1/2 tsp Paprika
- Pinch of cayenne pepper (optional)
Preparing the Crispy Battered Cod
Alright, let’s get started with the star of the show: the crispy battered cod! This is where the magic happens, and we’re going to make sure that batter is light, airy, and perfectly golden brown.
- Prepare the Cod: First, pat the cod pieces dry with paper towels. This is crucial! Excess moisture will prevent the batter from sticking properly and result in soggy fish. Season the cod pieces lightly with salt and pepper.
- Combine Dry Ingredients: In a large bowl, whisk together the flour, cornstarch, baking powder, baking soda, salt, pepper, garlic powder, and onion powder. The cornstarch helps create a lighter, crispier batter, so don’t skip it!
- Prepare the Wet Ingredients: In a separate bowl, whisk together the cold club soda (or sparkling water) and the lightly beaten egg. The cold club soda is key to achieving that light and airy texture. The bubbles help create a delicate batter.
- Combine Wet and Dry Ingredients: Gradually pour the wet ingredients into the dry ingredients, whisking constantly until just combined. Be careful not to overmix! A few lumps are okay. Overmixing will develop the gluten in the flour, resulting in a tough batter.
- Batter the Cod: Dip each piece of cod into the batter, making sure it’s fully coated. Let any excess batter drip off before placing it into the hot oil.
Preparing the Onion Rings
Now, let’s move on to the onion rings. These are the perfect complement to the crispy cod, adding a touch of sweetness and crunch.
- Prepare the Onions: Slice the onions into 1/2-inch thick rings. Gently separate the rings. If the rings are too thin, they’ll burn easily. If they’re too thick, they won’t cook through properly.
- Combine Dry Ingredients: In a large bowl, whisk together the flour, cornstarch, baking powder, salt, and pepper. Just like with the cod batter, the cornstarch is essential for that crispy texture.
- Prepare the Wet Ingredients: In a separate bowl, pour in the cold milk (or buttermilk). Buttermilk adds a lovely tang that complements the sweetness of the onions.
- Batter the Onion Rings: Dip each onion ring into the flour mixture, ensuring it’s fully coated. Then, dip it into the milk (or buttermilk), and finally, back into the flour mixture. This double-dipping technique creates an extra-thick and crispy coating.
The Cooking Process
Alright, time to fry! This is where patience is key. We want to achieve that perfect golden-brown color and crispy texture without burning anything.
- Heat the Oil: Pour vegetable oil into a large, heavy-bottomed pot or deep fryer until it’s about 3 inches deep. Heat the oil over medium-high heat to 350°F (175°C). Use a thermometer to monitor the temperature. If the oil is too hot, the food will burn on the outside before it’s cooked on the inside. If the oil is too cold, the food will absorb too much oil and become greasy.
- Fry the Cod: Carefully lower the battered cod pieces into the hot oil, working in batches to avoid overcrowding the pot. Overcrowding will lower the oil temperature and result in soggy fish. Fry for 3-4 minutes per side, or until golden brown and cooked through. The internal temperature of the cod should reach 145°F (63°C).
- Fry the Onion Rings: Carefully lower the battered onion rings into the hot oil, again working in batches. Fry for 2-3 minutes per side, or until golden brown and crispy.
- Drain the Excess Oil: As the cod and onion rings are cooked, remove them from the oil with a slotted spoon and place them on a wire rack lined with paper towels to drain the excess oil. This will help them stay crispy.
Making the Optional Dipping Sauce
While the cod and onion rings are draining, let’s whip up a quick and easy dipping sauce. This is totally optional, but it adds a delicious finishing touch.
- Combine Ingredients: In a small bowl, whisk together the mayonnaise, ketchup, sweet pickle relish, Dijon mustard, paprika, and cayenne pepper (if using).
- Adjust to Taste: Taste and adjust the seasonings as needed. Add more paprika for a smokier flavor, more cayenne pepper for a spicier kick, or more relish for a sweeter taste.
- Chill (Optional): For best results, chill the dipping sauce in the refrigerator for at least 30 minutes to allow the flavors to meld.
Serving and Enjoying
Finally, the moment we’ve all been waiting for! It’s time to serve and enjoy our crispy battered cod and onion rings.
- Serve Immediately: Serve the crispy battered cod and onion rings immediately while they’re still hot and crispy.
- Garnish (Optional): Garnish with a sprinkle of fresh parsley or a squeeze of lemon juice for added flavor and visual appeal.
- Serve with Dipping Sauce: Serve with the optional dipping sauce for dipping.
- Enjoy! Dig in and enjoy the delicious combination of crispy cod, sweet onion rings, and tangy dipping sauce!

Conclusion:
So, there you have it! This recipe for crispy battered cod onion rings is more than just a snack; it’s a culinary adventure waiting to happen. I truly believe this is a must-try recipe for anyone who loves a good crunch, a burst of flavor, and a little bit of fun in the kitchen. The combination of flaky cod and sweet onion, all encased in that perfectly golden, crispy batter, is simply irresistible. It’s the kind of dish that will have everyone reaching for seconds (and maybe even thirds!). But why is this recipe so special? It’s the perfect balance of textures and tastes. The cod provides a delicate, savory base, while the onion rings add a touch of sweetness and that satisfying bite. And let’s not forget the star of the show: the batter! It’s light, airy, and incredibly crispy, ensuring that every bite is a delightful experience. Plus, it’s surprisingly easy to make, even for beginner cooks. Now, let’s talk about serving suggestions. These crispy battered cod onion rings are fantastic on their own as a snack or appetizer, but they also shine as part of a larger meal. Imagine them piled high on a platter at your next party, served with a variety of dipping sauces like tartar sauce, spicy mayo, or even a tangy aioli. For a more substantial meal, try serving them alongside some crispy fries and a fresh salad. They also make a fantastic addition to fish tacos, adding a delightful crunch and flavor to every bite. And if you’re feeling adventurous, why not try some variations? You could experiment with different types of fish, such as haddock or pollock. Or, for a vegetarian option, try using thick slices of halloumi cheese instead of cod. You could also add different spices to the batter, such as paprika, garlic powder, or even a pinch of cayenne pepper for a little kick. Get creative and make this recipe your own! I’m so excited for you to try this recipe and experience the magic of crispy battered cod onion rings for yourself. I’m confident that you’ll love it as much as I do. It’s a guaranteed crowd-pleaser that’s perfect for any occasion, from casual weeknight dinners to festive gatherings with friends and family. But don’t just take my word for it! I encourage you to head into your kitchen, gather your ingredients, and give this recipe a try. And once you’ve made it, I’d love to hear about your experience. Did you make any variations? What dipping sauces did you use? What did your family and friends think? Please, share your photos and stories with me! You can leave a comment below, tag me on social media, or even send me an email. I’m always eager to hear from my readers and see how they’re enjoying my recipes. Your feedback is invaluable, and it helps me to continue creating delicious and easy-to-follow recipes that you’ll love. So, what are you waiting for? Get cooking and let the crispy, flavorful fun begin! I can’t wait to hear all about your culinary adventures with these amazing crispy battered cod onion rings. Happy cooking! Print
Crispy Battered Cod Onion Rings: The Ultimate Recipe
- Total Time: 50 minutes
- Yield: 4–6 servings 1x
Description
Crispy battered cod and golden onion rings, fried to perfection and served with a tangy dipping sauce. A classic comfort food combination!
Ingredients
- 1.5 lbs Cod fillets, skinless and boneless, cut into 2-inch pieces
- 1 cup All-purpose flour
- 1/2 cup Cornstarch
- 1 tsp Baking powder
- 1/2 tsp Baking soda
- 1 tsp Salt
- 1/2 tsp Black pepper
- 1/4 tsp Garlic powder
- 1/4 tsp Onion powder
- 1 cup Cold club soda or sparkling water
- 1 large Egg, lightly beaten
- Vegetable oil, for frying
- 2 large Yellow onions, sliced into 1/2-inch thick rings
- 1 cup All-purpose flour
- 1/2 cup Cornstarch
- 1 tsp Baking powder
- 1/2 tsp Salt
- 1/4 tsp Black pepper
- 1 cup Cold milk (or buttermilk for extra tang)
- Vegetable oil, for frying
- 1/2 cup Mayonnaise
- 2 tbsp Ketchup
- 1 tbsp Sweet pickle relish
- 1 tsp Dijon mustard
- 1/2 tsp Paprika
- Pinch of cayenne pepper (optional)
Instructions
- Prepare the Cod: Pat the cod pieces dry with paper towels. Season with salt and pepper.
- Combine Cod Dry Ingredients: In a large bowl, whisk together flour, cornstarch, baking powder, baking soda, salt, pepper, garlic powder, and onion powder.
- Prepare Cod Wet Ingredients: In a separate bowl, whisk together cold club soda (or sparkling water) and the lightly beaten egg.
- Combine Cod Wet and Dry Ingredients: Gradually pour the wet ingredients into the dry ingredients, whisking constantly until just combined. Be careful not to overmix! A few lumps are okay.
- Batter the Cod: Dip each piece of cod into the batter, making sure it’s fully coated. Let any excess batter drip off before placing it into the hot oil.
- Prepare the Onions: Slice the onions into 1/2-inch thick rings. Gently separate the rings.
- Combine Onion Rings Dry Ingredients: In a large bowl, whisk together the flour, cornstarch, baking powder, salt, and pepper.
- Prepare Onion Rings Wet Ingredients: In a separate bowl, pour in the cold milk (or buttermilk).
- Batter the Onion Rings: Dip each onion ring into the flour mixture, ensuring it’s fully coated. Then, dip it into the milk (or buttermilk), and finally, back into the flour mixture.
- Heat the Oil: Pour vegetable oil into a large, heavy-bottomed pot or deep fryer until it’s about 3 inches deep. Heat the oil over medium-high heat to 350°F (175°C). Use a thermometer to monitor the temperature.
- Fry the Cod: Carefully lower the battered cod pieces into the hot oil, working in batches to avoid overcrowding the pot. Fry for 3-4 minutes per side, or until golden brown and cooked through. The internal temperature of the cod should reach 145°F (63°C).
- Fry the Onion Rings: Carefully lower the battered onion rings into the hot oil, again working in batches. Fry for 2-3 minutes per side, or until golden brown and crispy.
- Drain the Excess Oil: As the cod and onion rings are cooked, remove them from the oil with a slotted spoon and place them on a wire rack lined with paper towels to drain the excess oil.
- Combine Dipping Sauce Ingredients: In a small bowl, whisk together the mayonnaise, ketchup, sweet pickle relish, Dijon mustard, paprika, and cayenne pepper (if using).
- Adjust Dipping Sauce to Taste: Taste and adjust the seasonings as needed.
- Chill Dipping Sauce (Optional): For best results, chill the dipping sauce in the refrigerator for at least 30 minutes to allow the flavors to meld.
- Serve Immediately: Serve the crispy battered cod and onion rings immediately while they’re still hot and crispy.
- Garnish (Optional): Garnish with a sprinkle of fresh parsley or a squeeze of lemon juice for added flavor and visual appeal.
- Serve with Dipping Sauce: Serve with the optional dipping sauce for dipping.
- Enjoy! Dig in and enjoy the delicious combination of crispy cod, sweet onion rings, and tangy dipping sauce!
Notes
- Patting the cod dry is crucial for crispy batter.
- Cornstarch is key for a light and crispy batter for both the cod and onion rings.
- Don’t overmix the batter. A few lumps are okay.
- Use cold club soda (or sparkling water) for a light and airy cod batter.
- Buttermilk adds a nice tang to the onion rings.
- Double-dipping the onion rings creates an extra-thick and crispy coating.
- Maintain the oil temperature at 350°F (175°C) for optimal frying.
- Don’t overcrowd the pot when frying.
- Drain excess oil on a wire rack lined with paper towels.
- Chilling the dipping sauce allows the flavors to meld.
- Prep Time: 30 minutes
- Cook Time: 20 minutes