This recipe crafts a gourmet fish sandwich featuring panko-crusted halibut fillets baked until crispy. It's assembled on a toasted sourdough baguette with a bright lemon-herb mayonnaise, fresh arugula, thick-cut tomato, and creamy avocado slices for a flavorful and satisfying meal.
Ensure the halibut fillets are thoroughly patted dry before breading; this helps the panko adhere better and crisp up nicely. Preheating the sheet tray is crucial for achieving a golden brown and crispy bottom crust on the fish during baking. Avoid overcrowding the tray, as this can steam the fish instead of baking it crisp. Let the breaded fish sit for a few minutes before baking to allow the coating to set. For the lemon-herb mayonnaise, using fresh, finely chopped herbs will provide the best flavor and aroma.