Name: Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe
Prep time: 15 min
Cook time: 50 min
Total time: 1 h 5 min
Cuisine: Newfoundland
Ingredients: 2 lbs fresh boneless cod loins; ¼ cup butter; ½ small onion, finely chopped; 2 garlic cloves, pressed or minced; ¼ cup cornstarch (or potato starch if needed); 1 tbsp Dijon mustard; ¼ cup chicken or vegetable broth; 2¼ cups milk; ⅔ cup shredded Parmesan cheese, divided; 1 cup shredded cheddar cheese; 2 tsp dried summer savory; Salt and black pepper, to taste; 1 small bag plain potato chips, crumbled

Jump to Recipe· 4.3 from 2 reviews

There is something irresistibly comforting about a creamy, cheesy fish casserole, especially when it carries the rich culinary heritage of the Canadian Maritimes. This Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe is a perfect example, combining tender flakes of fresh cod with a luscious, cheesy sauce topped by a satisfyingly crunchy potato chip crust. It’s the kind of dish that feels like a warm hug on a plate and has been a beloved staple in Newfoundland kitchens for generations. If you’re looking for a hearty gluten-free meal that brings together delicious simplicity and nostalgic charm, this cod au gratin will quickly become a favorite in your recipe rotation.

Ingredients You’ll Need

A clear glass square dish filled with a creamy white sauce that has small green herb flecks throughout. Beneath the sauce, there appear to be pieces of light-colored fish or meat partly covered by the sauce, giving a smooth but slightly textured surface. The dish sits on a white marbled surface, and the sauce looks thick and smooth with little bumps from the ingredients inside. Photo taken with an iphone --ar 4:5 --v 7

While the ingredient list may seem straightforward, each component in this Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe plays a crucial role in crafting those harmonious flavors and textures. From the delicate cod to the surprise potato chip topping, simplicity here is essential, ensuring the star ingredients shine through.

2 lbs fresh boneless cod loins: The fresh cod provides a mild, flaky base that soaks up the sauce beautifully.

¼ cup butter: Adds richness and helps sauté the aromatics perfectly.
½ small onion, finely chopped: Offers subtle sweetness and depth when gently cooked.
2 garlic cloves, pressed or minced: Delivers a gentle, aromatic punch without overpowering.

¼ cup cornstarch (or potato starch if needed): Essential for thickening the creamy sauce while keeping the recipe gluten-free.
1 tbsp Dijon mustard: A subtle tang that brightens the sauce elegantly.
¼ cup chicken or vegetable broth: Adds umami and moisture for a luscious sauce base.

2¼ cups milk: The cornerstone of the creamy texture in the sauce.
⅔ cup shredded Parmesan cheese, divided: Brings a nutty depth and savory flavor, part mixed into the sauce and part sprinkled on top.
1 cup shredded cheddar cheese: Provides meltiness and a sharper cheesy contrast.

2 tsp dried summer savory: A fragrant herb that adds a classic Maritime twist.
Salt and black pepper, to taste: To balance and enhance all those flavors.
1 small bag plain potato chips, crumbled: This gluten-free crumb topping is what sets the dish apart, adding delightful crunch and a hint of salty indulgence.

How to Make Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe

Step 1: Prepare the Cod

Begin by preheating your oven to 350°F (180°C). Cut the fresh boneless cod loins into about 1-inch pieces and arrange them evenly in your chosen baking dish—an 8 × 8-inch pan works beautifully, but individual ramekins offer a charming personal touch. This helps each serving cook evenly and soak up the creamy sauce later on.

Step 2: Build the Flavor Base

In a medium saucepan, melt the butter over medium heat. Add the finely chopped onion and minced garlic, cooking them gently until the onion becomes translucent and tender, infusing the butter with sweet, aromatic flavors. This step is crucial for creating a savory backbone to the sauce that complements the mild cod perfectly.

Step 3: Thicken the Sauce

Stir in the cornstarch and cook it for another minute while stirring, which will help avoid any lumps. Next, whisk in the Dijon mustard until it’s thoroughly blended. Slowly pour in the broth while whisking vigorously to keep the mixture smooth. Let this simmer lightly for about 2 minutes to marry the flavors.

Step 4: Create the Creamy Cheese Sauce

Gradually add the milk, whisking continuously to prevent lumps, and heat until the sauce starts to thicken beautifully. Stir in half of the Parmesan cheese along with a small handful of cheddar, stirring until the cheese melts fully into the sauce, which should be silky and luscious by now. Finally, sprinkle in the dried summer savory and season everything with salt and black pepper to taste.

Step 5: Combine Fish and Sauce

Pour this heavenly creamy sauce over the pieces of cod in your baking dish, gently folding the pieces around the sauce so that every flake is coated with cheesy goodness. This ensures a perfectly balanced bite every time.

Step 6: Add Cheese and Crunch

Sprinkle the remaining cheddar and Parmesan cheeses evenly over the top. Then comes the fun twist: scatter a generous layer of crumbled plain potato chips over the cheese. This topping is the secret to this Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe’s unforgettable texture, delivering an addictive crunch with every forkful.

Step 7: Bake to Perfection

Bake uncovered in the preheated oven for about 45 to 50 minutes if you’re using the large baking dish. For individual servings in ramekins, reduce the baking time to approximately 35 minutes. You’ll know it’s done when the sauce is bubbling and golden, and the cod flakes easily with a fork.

Step 8: Serve While Hot

Serve your Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe warm, straight from the oven to enjoy the creamy sauce and crunchy top at their absolute best.

How to Serve Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe

The image shows two oval white ceramic dishes filled with a baked dish that has a golden brown, crispy top layer made of melted cheese and crunchy breadcrumb bits sprinkled with small green herbs. Beneath the crusty top, the dish has a creamy, light beige sauce layer with hints of melted cheese stretching through. The edges of the dish show slight browning from baking, and the texture looks creamy and smooth under the crumb topping. The dishes rest on a black surface, enhancing the golden colors of the food. photo taken with an iphone --ar 4:5 --v 7

Garnishes

A sprinkle of freshly chopped parsley or chives not only brightens the look of the dish but adds a fresh herbal note that balances the richness marvelously. A light squeeze of lemon juice on the side can also bring a zesty lift that highlights the delicate cod flavor.

Side Dishes

Since the au gratin is rich and creamy, serving it alongside light, crisp sides works beautifully. Think simple green salads with a tangy vinaigrette, steamed seasonal vegetables like asparagus or green beans, or even a refreshing coleslaw to add contrast and color to your plate.

Creative Ways to Present

For a special occasion or family dinner, consider spooning the finished au gratin into individual mini cast iron skillets or decorative ramekins. It lends a rustic charm and makes serving a breeze. Alternatively, add a layer of thinly sliced potatoes beneath the cod for an extra-glorious gratin experience that’s still gluten-free.

Make Ahead and Storage

Storing Leftovers

Leftover cod au gratin can be refrigerated in an airtight container for up to three days. The sauce will thicken as it cools, so gently reheat it to bring back its creamy texture before serving again.

Freezing

This dish freezes well, though the potato chip topping may lose some of its crunch after thawing. For best results, freeze the baked cod au gratin without the chip topping, then add fresh crumbled chips before reheating.

Reheating

Reheat gently in the oven at 325°F (160°C) until warm throughout. Cover loosely with foil to prevent the top from burning while allowing the sauce to melt back into its creamy glory. Avoid microwaving if possible to keep the delicate textures intact.

FAQs

Can I use a different type of fish for this recipe?

Absolutely! While cod is traditional in this recipe, you can substitute with other firm white fish like haddock or pollock. Just be sure they’re fresh and boneless for the best results.

Is this recipe truly gluten-free?

Yes! This Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe uses cornstarch or potato starch instead of flour, and the potato chip topping is plain and gluten-free, making it safe for those with gluten sensitivities.

Can I make this recipe dairy-free?

To make a dairy-free version, you’d need to swap the butter, milk, and cheeses for plant-based alternatives. Keep in mind this will alter the flavor and texture somewhat, but it’s definitely doable and still delicious!

What is the purpose of the potato chip topping?

The crumbled potato chips provide a delightful crunchy contrast to the creamy, cheesy sauce beneath, offering a unique texture that replaces traditional breadcrumb toppings in a gluten-free way.

How can I add more vegetables to this dish?

Feel free to mix in some sautéed spinach, steamed broccoli, or diced roasted red peppers into the fish before adding the sauce. This adds color, nutrition, and extra layers of flavor without overwhelming the cod.

Final Thoughts

Trying this Traditional Newfoundland Cod Au Gratin (Gluten-Free) Recipe is like inviting a piece of Newfoundland’s heart and soul into your kitchen. Its creamy, cheesy comfort enhanced by that unexpected crispy chip topping makes it a dish worth savoring on any day. Whether you’re cooking for family, friends, or simply treating yourself, it promises warmth, flavor, and happy smiles around the table. Give it a go—you just might find your go-to gluten-free comfort food!