Copycat McDonald’s Fish Filet Sandwich Recipe

McDonald’s is famous for its fish fillet sandwich, the only problem being, it’s not offered on their menu all year long. Well, here’s some good news for you! You can make it in your home whenever you please. Fish lovers, you can thank us later!

Copycat McDonald’s Fish Filet Sandwich Recipe

How To Make Copycat McDonald's Fish Filet Sandwich

A nicely done copycat version that tastes like the original at McDonald's It's got a flavored fish patty and that special tasty tartar sauce.

Prep: 20 mins
Marinate: 5 mins
Cook: 10 mins
Total: 35 mins


Fish Fillet

  • 4 mahi-mahi fillets, or boneless pollock, cod, haddock, mahi mahi, or hake fillets, roughly 21 oz total, butterflied if needed
  • 2 egg whites
  • 4 tbsp all-purpose flour
  • 2 tbsp lemon juice
  • 2 cups breadcrumbs
  • 5 cups vegetable oil , for frying

Tartar Sauce

  • ½ cup mayonnaise
  • 1 tbsp yellow onion, minced
  • ¼ cup sweet pickle relish
  • 1 tbsp milk
  • 1 tbsp heavy cream
  • 2 tsp parsley, chopped
  • 2 tbsp capers, minced
  • ½ tsp lemon juice
  • tsp granulated sugar
  • Salt & ground pepper , to taste


  • 4 hamburger buns
  • 4 American cheese slices


Tartar Sauce:

  1. Combine all the tartar sauce ingredients in a small bowl and mix until well-combined.

  2. Season with salt and ground black pepper to taste & adjust accordingly. Mix well and set aside.

Fish Fillet:

  1. Heat up your oil in a deep skillet for frying.

  2. Brush the fillets with lemon juice, then season with salt & pepper all over. Allow it to marinate for 5 minutes.

  3. While waiting, beat the egg whites in a bowl until they are foamy.

  4. Season with salt & pepper, & add the flour. Fold until evenly incorporated, forming a batter. You may need to add water for this.

  5. Dip your fish into the batter, then coat with breadcrumbs.

  6. Place into the frying pan after the fish is coated. Deep fry until golden brown and repeat until all fillets have been fried.

Arranging the sandwich:

  1. Slice the sandwich bun in half and toast briefly. Spread the tartar sauce on both sides of the bun.

  2. Place the fish fillet in-between, followed by the American cheese then seal sandwich.

  3. Serve with roughly 3 ounces of fries per serving.


  • Sugar: 9g
  • :
  • Calcium: 296mg
  • Calories: 452kcal
  • Carbohydrates: 35g
  • Cholesterol: 34mg
  • Fat: 30g
  • Fiber: 1g
  • Iron: 2mg
  • Potassium: 107mg
  • Protein: 11g
  • Saturated Fat: 8g
  • Sodium: 930mg
  • Vitamin A: 403IU
  • Vitamin C: 4mg
Nutrition Disclaimer
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