19 min
Prep Time
2 hr 11 min
Cook Time
Easy
Level
10
Servings

Dry white wine and Gruyère cheese give this fish casserole a rich flavor that hides its virtue. Before baking, we top the dish with seasoned whole-wheat breadcrumbs, which add a wholesome, nutty flavor and dietary fiber. For variety, you can substitute almost any mild white fish.

Ingredients

  • 2 tablespoons extra-virgin olive oil, divided

  • 2 medium onions, very thinly sliced

  • 1 cup dry white wine

  • 1 1/4 pounds cod (see Tip), cut into 4 pieces

  • 2 teaspoons chopped fresh thyme

  • ½ teaspoon kosher salt

  • ½ teaspoon black pepper

  • 1 1/2 cups finely chopped whole-wheat country bread, (about 2 slices)

  • ½ teaspoon paprika

  • ½ teaspoon garlic powder

  • 1 cup finely shredded Gruyere, or Swiss cheese

Method

  1. Preheat oven to 400 degrees F.

  2. Heat 1 tablespoon oil in a large ovenproof skillet over medium-high heat. Add onions and cook, stirring often, until just starting to soften, 5 to 7 minutes. Add wine, increase heat to high and cook, stirring often, until the wine is slightly reduced, 2 to 4 minutes.

  3. Place cod on the onions and sprinkle with thyme, salt and pepper. Cover the pan tightly with foil; transfer to the oven and bake for 12 minutes.

  4. Toss bread with the remaining 1 tablespoon oil, paprika and garlic powder in a medium bowl. Spread the bread mixture over the fish and top with cheese. Bake, uncovered, until the fish is opaque in the center, about 10 minutes more.