Cod au Gratin

Prep Time: 20 minutes
Cook Time: 35 minutes
Total Time: 55 minutes
Serving Size: Serves 4
Skill Level: Medium
Cuisine: Newfoundland / French Fusion
Dish Type: Main Course, Seafood Casserole

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Introduction

Cod au Gratin is a traditional baked cod dish bathed in a creamy béchamel sauce and topped with cheese and breadcrumbs. It’s deeply satisfying, especially on a cold evening, and offers a lovely balance of rich flavors and delicate fish. Hailing from Newfoundland’s coastal kitchens—with roots in classic French cuisine—Cod au Gratin is comfort food at its finest.

Whether you’re new to seafood or a seasoned home cook, this dish is an excellent choice for family dinners or special gatherings. With its golden crust and creamy interior, Cod au Gratin never fails to impress. The recipe below is designed to be accessible, flavorful, and nourishing.

Ingredients

For the Cod:

• 1.5 lbs (680 g) fresh cod fillets (boneless, skinless)

• 1 tbsp olive oil or butter

• Salt and pepper, to taste

• 1/2 tsp garlic powder (optional)

For the Sauce (Béchamel):

• 3 tbsp butter

• 3 tbsp all-purpose flour

• 2 cups whole milk (or half-and-half for richness)

• 1/4 tsp ground nutmeg

• Salt and freshly ground pepper, to taste

• 1/2 cup grated Parmesan cheese (or cheddar for a sharper flavor)

Topping:

• 1/2 cup breadcrumbs (preferably Panko or fresh)

• 1/2 cup grated sharp cheddar cheese

• 1 tbsp melted butter

• Optional: 2 tbsp chopped parsley for garnish

Instructions

Step 1: Preheat the Oven

Preheat your oven to 375°F (190°C). Lightly grease a medium baking dish or casserole pan with butter or cooking spray.

Step 2: Prepare the Cod

Pat the cod fillets dry with paper towels to remove excess moisture. Season both sides with salt, pepper, and a pinch of garlic powder if desired.

Heat 1 tbsp olive oil or butter in a skillet over medium heat. Lightly sear the cod fillets for 2–3 minutes per side—just enough to firm them up. They don’t need to be fully cooked at this point as they’ll finish cooking in the oven.

Once seared, place the cod into the prepared baking dish. Gently break into large chunks to evenly spread the fish but avoid shredding it.

Step 3: Make the Béchamel Sauce

In a medium saucepan, melt 3 tbsp butter over medium heat. Once melted and foamy, whisk in 3 tbsp flour to form a roux. Cook for 1–2 minutes, whisking constantly to remove the raw flour taste.

Gradually pour in the milk, whisking continuously to avoid lumps. Bring to a gentle simmer until the sauce thickens—this should take 5–7 minutes.

Season the sauce with salt, pepper, and nutmeg. Stir in 1/2 cup grated Parmesan (or cheddar), and mix until melted and smooth. The sauce should be velvety but not overly thick.

Step 4: Assemble the Dish

Pour the hot béchamel sauce evenly over the cod pieces in the baking dish, making sure all fish is well-coated.

In a small bowl, combine the breadcrumbs, cheddar cheese, and melted butter. Sprinkle this mixture evenly on top of the béchamel-covered cod. This will create that delicious golden crust when baked.

Step 5: Bake

Place the dish in the preheated oven and bake for 30–35 minutes, or until the topping is golden brown and the sauce is bubbling around the edges.

If you want a crisper top, broil for an additional 1–2 minutes, watching carefully to avoid burning.

Step 6: Serve

Remove from the oven and let it rest for 5–10 minutes before serving. Garnish with fresh parsley for color and a fresh flavor contrast.

Serve hot, ideally with a side of mashed potatoes, steamed vegetables, or crusty bread to mop up the sauce.

Tips for Success

• Fresh vs Frozen Cod: Fresh cod is ideal, but frozen works too—just ensure it’s fully thawed and patted dry.

• Cheese Choice: For a sharper flavor, use aged cheddar. For a milder touch, go with mozzarella or Swiss.

• Breadcrumbs: Panko gives a crunchier texture. For a softer top, use fresh breadcrumbs.

• Make-Ahead Tip: You can assemble the dish a few hours in advance and refrigerate before baking.

Serving Suggestions

Cod au Gratin pairs beautifully with:

• Roasted root vegetables (carrots, parsnips, sweet potatoes)

• A crisp green salad with vinaigrette

• Garlic mashed potatoes or creamy polenta

• A light white wine like Chardonnay or Sauvignon Blanc

For a heartier meal, serve it alongside rice pilaf or herbed couscous.

Nutritional Information (Per Serving – Approximate)

Note: Values will vary based on specific ingredients and brands used.

Conclusion

Cod au Gratin is a fantastic way to elevate a humble fish like cod into a dish that feels luxurious and satisfying. The creamy sauce, cheesy topping, and baked finish create a rich texture and depth of flavor that appeals to all ages. Whether you’re preparing it for a weeknight meal or a cozy Sunday dinner, it’s bound to become a favorite in your recipe collection.

Enjoy this comforting seafood bake with your favorite sides, and don’t be surprised if there are no leftovers!