Fish Sandwich with Caramelized Onions Recipe

Name: Fish Sandwich with Caramelized Onions
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: Six 4.5-inch brioche buns; 2 tablespoons butter, at room temperature; Grapeseed oil, for frying; 3 pounds firm white fish, cut in 5 to 6 portions; Salt and pepper; 2 cups all-purpose flour; 4 cups egg wash equal parts whole eggs and milk, mixed well; 2 cups panko; 12 sliced Roma tomatoes, sliced 1/4-inch thick; 1/4 cup remoulade; 1 cup caramelized onions

Servings: persons

Six 4.5-inch brioche buns
2 tablespoons butter, at room temperature
Grapeseed oil, for frying
3 pounds firm white fish, cut in 5 to 6 portions
Salt and pepper
2 cups all-purpose flour
4 cups egg wash equal parts whole eggs and milk, mixed well
2 cups panko
12 sliced Roma tomatoes, sliced 1/4-inch thick
1/4 cup remoulade
1 cup caramelized onions

1
To prepare the rolls, open the buns and spread the butter evenly on interior of the buns.
2
Toast the buns on a flat pan or saute pan until golden brown.
3
For the fish, preheat the fryer to 350 degrees F with grapeseed oil.
4
Next pat dry the portioned fish on all sides with paper towels.
5
Then sprinkle the fish with salt and pepper evenly.
6
Next dip the fish in the flour and tap off the excess flour.
7
Then dip the fish into the egg wash.
8
Finish the fish in the panko, ensuring to coat evenly.
9
Repeat the process for the remaining fish portions, then carefully drop the coated fish in the fryer.
10
Cook until golden brown on both sides, 6 to 7 minutes.
11
Remove from the fryer and place on paper towels to remove excess oil.
12
Season the tomatoes with salt and pepper and heat in a saute pan over medium-high heat, 1 minute per side.
13
To build the sandwich, stack the bun with the remoulade, grilled tomatoes and caramelized onions.
14
Finish with a portion of fish and finally top with the top half of the bun.
15
Repeat for the remaining sandwiches.

674

kcal

Calories

Fat

108

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 11 ingredients. The key ingredients include: Six 4.5-inch brioche buns, 2 tablespoons butter, at room temperature, Grapeseed oil, for frying, 3 pounds firm white fish, cut in 5 to 6 portions, and more.

Yes, Fish Sandwich with Caramelized Onions falls under the Seafood category and is a great choice for this type of meal.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

That's it — enjoy your meal!

Fish Sandwich with Caramelized Onions

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions