“Have it your way,” yeah! You guessed it right! I’m back with another Burger King copycat recipe, this time for their Big Fish Sandwich. I bet you’ll absolutely love its fresh flavor and crispy exterior.

This fish sandwich is my favorite because it comes lined with tartar sauce. The sauce has the right amount of tang that pairs brilliantly with the fish and hits the right spot with its zesty note.
Apart from this super-delicious sauce, this Burger King Fish Sandwich is all about fried fish and lettuce enclosed in perfectly toasted buns.
The soft, tender buns are coated in panko breadcrumbs, making them crunchy enough to seal the deal. It’s one of the best fish sandwiches you’ll ever taste.
After a lot of research, I found that Burger King uses Alaskan Pollock fillet to make fish sandwiches, which is great for frying, sautéing, and baking. Its flaky, tender texture makes it a great option among fast-food chains.
So, if you’re a sandwich lover and looking for an indulgent recipe, here’s a treat you can make in just 30 minutes. It also makes for a pocket-friendly meal that you can enjoy guilt-free!
Equipment Required
- Skillet: First off, I grabbed a good skillet to get that crispy texture of the fish.
- Pan: Then, I used a pan to toast the buns.
- Wire Rack: I keep my fried fish on the wire rack so they do not get soggy.
- Baking Sheet: I keep the sheet under the wire rack to catch any drips from the fish.
- Tong: A pair of tongs helps me to flip the fish easily.
- 2 Mixing Bowls: You will need 2 mixing bowls, one to combine the milk and egg and another to combine the all-purpose flour and salt.
- Knife: This equipment is essential as it enables me to cut the lettuce properly.
- Spatula: I keep a spatula handy to assemble my sandwich.
- Small Bowl: A small bowl is a must to combine the ingredients of the tartar sauce.

Burger King Fish Sandwich Ingredients & Substitutions
Note: The ingredients listed below will serve 2 people. You can adjust the quantities according to the number of people you wish to serve.
- 2 Tablespoons Whole Milk: You can also make this sandwich with soy, coconut, or almond milk as an alternative.
- 2 Eggs
- ½ Cup All-Purpose Flour: When all-purpose flour is unavailable, I often look for almond, rice, or buckwheat flour.
- 2 Teaspoons Salt
- 1 Cup Breadcrumbs: When I run out of breadcrumbs, I go for panko breadcrumbs as they give the best crunch. However, homemade crumbs, crushed cornflakes, nuts and seeds, or rolled oats can also work fine.
- 2 Mahi-Mahi Fillets ( roughly 14 oz Total), Haddock, Cod, Pollock, or Hake Fillets, Skin-Off: You are free to use any of these varieties, but if you can’t find them either, you should look for swordfish, halibut, or tofu fish.
- 5 Cups Vegetable Oil, For Frying: Any vegetable oil, such as canola, olive, or avocado oil, will do.
For Tartar Sauce
- ½ Cup Mayonnaise: You can also substitute sour cream or Greek yogurt.
- 2½ Tablespoons Pickle Relish: I recommend using dill pickles, mustard relish, or jalapeno pepper relish as alternatives.
- 1 Tablespoon Corn Syrup: If you run out of corn syrup, you can substitute brown rice syrup, maple syrup, honey, or tapioca syrup.
- Salt, To Taste
To Serve
- 2 Hamburger Bun, Toasted, Cut In Half: A bagel burger, Baguette burger, cornbread burger, or croissant burger will also do.
- 2 Slices American Cheese: I also like using cheddar, parmesan, or mozzarella cheese.
- 3 Oz Potato Fries, Per Serving: You can pair them with sweet potato and zucchini fries.
- ½ Cup Shredded Iceberg Lettuce, Per Serving: I suggest using Romaine lettuce, cabbage, spinach, or Radicchio as alternatives.
Preparation And Cooking Time
| Preparation Time | Cooking Time | Total Time |
|---|---|---|
| 15 Minutes | 20 Minutes | 35 Minutes |
How To Make a Burger King Fish Sandwich At Home

Step 1
Take a mixing bowl and combine the egg and whole milk.

Step 2
Take another bowl and add all-purpose flour and salt. Mix them together.

Step 3
Now take the fish fillet and coat it with the all-purpose flour mixture, the egg-and-milk mixture, and the breadcrumbs.

Step 4
Heat the oil in a skillet and fry the fish until golden.

Step 5
Now, take a frying pan and toast the bun.

Step 6
Finally, assemble everything: cheese, potato fries, lettuce, fried fish, and tartar sauce.

Step 7
Your crispy Burger King Fish Sandwich is ready.
Expert Tips That I Recommend
- Before coating the fish, I season my all-purpose flour with black pepper, paprika, and salt. These add a subtle layer of flavor without overpowering the crust.
- I always refrigerate my fillets for at least 15 minutes after breading them. This helps the coating stick better and provides a pro-level crunch to the fish.
- There’s one more secret to my crispy fish sandwich: buttermilk. I soak my fillets in buttermilk for about 30 minutes before breading them. This step not only adds a tangy finish to the sandwich but also tenderizes the fish, making the breadcrumbs stick better.
- Want to add unexpected depth to your fish sandwich? Infuse the oil with thyme or rosemary, then fry the fish in it. This will give a nice aromatic twist to your regular sandwich, making it extraordinary.
FAQs About Burger King Fish Sandwich
Nutritional Information Per Serving
Burger King Fish Sandwich is unbelievably indulgent but not healthy. Firstly, the fish is deep-fried, which increases its calorie content. Secondly, panko breadcrumbs absorb a lot of oil, increasing the fat content.
| Calories | 5873 kcal |
| Sugar | 18 g |
| Calcium | 479 mg |
| Carbohydrates | 100 g |
| Cholesterol | 334 mg |
| Fat | 604 g |
| Fibre | 5 g |
| Iron | 9 mg |
| Monounsaturated fat | 76 g |
| Polyunsaturated fat | 37 g |
| Potassium | 1087 mg |
| Protein | 57 g |
| Saturated fat | 458 g |
| Sodium | 4076 mg |
| Trans fat | 1 g |
| Vitamin A | 10151 IU |
| Vitamin C | 2 mg |
This delicious Burger King Fish Sandwich is suitable for pescatarian diets as it is fish-based and for a flexitarian diet as an occasional treat.

Recipe Variations For Different Diets
- Gluten-Free: I just replace three things: all-purpose flour with rice flour, breadcrumbs with crushed gluten-free crackers, and hamburger buns with gluten-free hamburger buns.
- Keto-Friendly: I once made a keto version for my father by substituting whole milk with unsweetened almond milk, all-purpose flour and breadcrumbs with almond flour, and pickle relish with chopped pickles and a bit of vinegar. Instead of corn syrup, I used stevia, and hamburger buns were replaced with keto-friendly bread made from almond flour.
Storing And Reheating This Recipe
Storing
- Refrigerator: I first let the fish fillets cool to room temperature, then wrap each fillet with plastic wrap or aluminum foil to prevent them from drying out. Then I transfer them to an airtight container and refrigerate them for 2-3 days.
- Freezer: I first make sure that the fish fillets are completely cool. Then I wrap each fillet tightly with plastic wrap, then again with aluminum foil, to prevent freezer burns. I store them in the freezer for up to 2-3 months. You can also put them in freezer-safe bags.
Reheating
Note: Make sure to thaw the fish fillets in the refrigerator overnight before reheating.
- Oven: Before reheating the fish fillets, I preheat the oven to 375°F. Then I place the fish fillets on a baking sheet lined with parchment paper and bake them for 10-15 minutes, until cooked through and golden and crispy.
- Air-Fryer: For this method, set your air-fryer to 350°F and place the fish fillets in the basket in a single layer. Then reheat them for 5-8 minutes, until heated through.
- Skillet: This is the quickest method, as it only requires me to place the fish fillets in a skillet, cover it with a lid, and cook them for 3-4 minutes on each side until cooked and ready to eat. I make sure to keep the heat on medium to avoid burning the fish fillets.
What To Serve With This Recipe
Burger King Fish Sandwich is so versatile that it can be paired with a number of dishes to enhance its flavors. Personally, I like to pair it with Potato Fries and Coleslaw.
I also like to serve it with classic Tartar Sauce and Honey Mustard Sauce to add a tangy contrast to the sandwich.
Printable Version
Burger King Fish Sandwich Recipe
Ingredients
- 2 Tablespoons Whole Milk
- 2 Eggs
- ½ Cup All-Purpose Flour
- 2 Teaspoon Salt
- 1 Cup Breadcrumbs
- 2 Mahi-Mahi Fillets ( roughly 14 oz Total), Or Haddock, Cod, Pollock, Or Hake Fillets, Skin-Off
- 5 Cups Vegetable Oil For Frying
For Tartar Sauce
- ½ Cup Mayonnaise
- 2 ½ Tablespoon Pickle Relish
- 1 Tablespoon Corn Syrup
- Salt To Taste
To Serve
- 2 Hamburger Bun Toasted, Cut In Half
- 2 Slices American Cheese
- 3 Oz Potato Fries Per Serving
- ½ Cup Iceberg Lettuce Per Serving, Shredded
Equipment
- Skillet
- Pan
- Wire Rack
- Baking Sheet
- Tong
- 2 Mixing Bowls
- Knife
- Spatula
- Small Bowl
Instructions
- Take a mixing bowl and combine the egg and whole milk.
- Take another bowl and add all-purpose flour and salt. Mix them together.
- Now take the fish fillet and coat it with the all-purpose flour mixture, the egg-and-milk mixture, and the breadcrumbs
- Heat the oil in a skillet and fry the fish until golden.
- Now, take a frying pan and toast the bun.
- Finally, assemble everything: cheese, potato fries, lettuce, fried fish, and tartar sauce.
- Your crispy Burger King Fish Sandwich is ready.
Notes
- Before coating the fish, I season my all-purpose flour with black pepper, paprika, and salt. These add a subtle layer of flavor without overpowering the crust.
- I always refrigerate my fillets for at least 15 minutes after breading them. This helps the coating stick better and provides a pro-level crunch to the fish.
- There’s one more secret to my crispy fish sandwich: buttermilk. I soak my fillets in buttermilk for about 30 minutes before breading them. This step not only adds a tangy finish to the sandwich but also tenderizes the fish, making the breadcrumbs stick better.
- Want to add unexpected depth to your fish sandwich? Infuse the oil with thyme or rosemary, then fry the fish in it. This will give a nice aromatic twist to your regular sandwich, making it extraordinary.
Nutrition
More Burger King Recipes That You Can Try






Conclusion
This classic Burger King Fish Sandwich is a delicious treat that brings a fan-favorite taste right into your own kitchen. Moreover, you can even customize it with your favorite toppings and serve it with a range of sauces.
So, prepare to make these sandwiches and savor a meal that will impress. Also, please share your tweaks and variations with us in the comments section, and don’t forget to tag us on social media as well. Until next time! See you soon.







