Copycat Filet O Fish Recipe: A Homemade Classic

If you’re a fan of McDonald’s iconic Filet O Fish sandwich, you’re going to love this homemade version! This copycat Filet O Fish recipe captures the same irresistible flavors of the original but with a fresh, homemade twist. From perfectly crispy cod to a creamy tartar sauce, this recipe will make you ditch the drive-thru for good.

Why Make a Copycat Filet O Fish at Home?
Recreating fast food classics at home gives you complete control over the quality of ingredients, flavors, and portion sizes. Not only does this recipe taste better than the original, but it’s also made with fresh cod fillets, fluffy buns, and a rich homemade tartar sauce. You can customize it to suit your taste while avoiding processed ingredients.

Copycat Filet O Fish
Ingredients You’ll Need
For the Fish Fillets:
- 4 cod fillets (skinless, approximately 4 oz each)
- 1 teaspoon kosher salt (divided)
- 1 egg
- 1 tablespoon mayonnaise
- 1 tablespoon Dijon mustard
- 1 tablespoon cornstarch
- 1 tablespoon flour
- 1/4 teaspoon paprika
- 2 cups panko breadcrumbs
- Light oil for frying
For the Tartar Sauce:
- 1 cup mayonnaise
- 2 teaspoons dill relish
- 1 teaspoon sugar
- 3 teaspoons finely chopped white onion
For Assembly:
- 4 brioche or potato buns
- 4 slices of American cheese (or half slices for an authentic touch)
Step-by-Step Instructions
1. Prepare the Breading Station
In a medium bowl, whisk together the egg, mayonnaise, Dijon mustard, cornstarch, flour, and ½ teaspoon of kosher salt. This mixture will ensure the fillets are coated evenly and crispy after frying.
In a food processor, pulse the panko breadcrumbs to make them slightly finer. Mix the breadcrumbs with paprika and the remaining ½ teaspoon of kosher salt in a shallow dish.
2. Bread the Cod Fillets
Pat the cod fillets dry with paper towels to remove excess moisture. Dip each fillet into the wet batter, ensuring it’s fully coated. Then, dredge the fillets in the breadcrumb mixture, pressing gently to adhere.
3. Fry to Perfection
Heat about 1 inch of oil in a large skillet over medium-high heat. Once the oil reaches 350°F (you can test with a thermometer), carefully add the breaded fillets. Avoid overcrowding the skillet, as this can lower the oil’s temperature. Fry the fillets for 3–4 minutes per side or until golden brown and crispy.
Transfer the cooked fillets to a wire rack or a paper towel-lined plate to drain any excess oil.
4. Make the Homemade Tartar Sauce
While the fillets cool slightly, prepare the tartar sauce. In a small bowl, combine mayonnaise, dill relish, sugar, and finely chopped onion. Mix well until smooth. Set aside.
5. Assemble the Sandwiches
To assemble the sandwiches, place a slice of American cheese on the bottom half of each bun. Top with a hot, crispy fillet and a generous spoonful of tartar sauce. Finish with the top bun. For an extra-authentic touch, lightly steam the buns before assembly.
Tips for Success
- Use Fresh Cod: Opt for high-quality, skinless cod fillets for the best flavor and texture.
- Crispier Coating: To achieve extra crunch, freeze the breaded fillets for 10–15 minutes before frying.
- Steamed Buns: For the true McDonald’s experience, steam your buns before assembling the sandwiches.
- Cheese Options: McDonald’s uses half a slice of cheese, but feel free to use a full slice for more cheesy goodness.
Recipe Variations
- Healthier Version: Bake the breaded fillets in an oven preheated to 425°F for 12–15 minutes or until golden brown.
- Spicy Kick: Add a dash of cayenne pepper to the breadcrumb mixture or mix hot sauce into the tartar sauce for extra heat.
- Additional Toppings: Enhance your sandwich with lettuce, pickles, or even a squeeze of lemon juice.
Storing and Reheating
If you have leftovers, store the fish fillets in an airtight container in the refrigerator for up to 3 days. Reheat in an oven or air fryer at 375°F for 5–7 minutes to maintain crispiness.
Nutrition Information (Per Serving)
- Calories: 1508
- Carbohydrates: 52g
- Protein: 178g
- Fat: 62g
- Sodium: 2280mg
- Cholesterol: 474mg
This Copycat Filet O Fish recipe brings all the nostalgia of the McDonald’s classic straight to your kitchen. It’s a perfect meal for lunch, dinner, or even a casual get-together with friends. Give it a try and enjoy the crispy, flavorful goodness of this homemade classic!
Enjoy your culinary creation and impress everyone with your take on this fast-food favorite. You may never want to order the original again!