Name: Baked Cod with Mustard Cream Sauce and Roasted Baby Potatoes Recipe
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 3 tablespoons olive oil; 1 tablespoon Old Bay seasoning; 1 teaspoon rubbed sage; Kosher salt; Fresh cracked pepper; 1.5 pounds baby gold potatoes; 1 pound cod fillet; 3/4 cup heavy cream; 1/4 cup chicken broth; 1/4 cup capers; 2 cloves garlic, finely minced; 2 tablespoons Dijon mustard; 2 tablespoons stone-ground mustard; 1 tablespoon lemon juice; Kosher salt; Fresh cracked pepper; Fresh chopped parsley; Freshly sliced chives; Lemon wedges

Jump to Recipe· 4.2 from 12 reviews

If you’re craving a meal that feels both elegant and comforting, then the Baked Cod with Mustard Cream Sauce and Roasted Baby Potatoes Recipe is about to become your new favorite. This dish marries flaky, tender cod with creamy, tangy mustard sauce while the roasted baby potatoes bring a perfect golden, crisp edge. The flavors meld beautifully, offering a satisfying balance of rich creaminess, zesty mustard kick, earthy herbs, and just the right amount of savory warmth. It’s effortless enough for weeknight dinners yet special enough to serve guests, making it a versatile and absolutely delicious choice.

Ingredients You’ll Need

The image shows an overhead view of ingredients arranged neatly on a white marbled surface. At the center right, a large white ridged oval plate holds two thick white fish fillets with smooth texture. Around it, there are small white bowls containing different items: one with minced ginger, dried green herbs, and a brown spice mix on a divided plate; another with yellow melted butter; a small brown bowl with a light brown liquid; a white pitcher of cream; a small white bowl of mustard and grainy mustard placed side by side; a pink bowl full of green capers; a white round plate with four lemon wedges; and a white bowl filled with whole small round potatoes. Photo taken with an iphone --ar 4:5 --v 7

When it comes to the Baked Cod with Mustard Cream Sauce and Roasted Baby Potatoes Recipe, simplicity is key. The ingredients here are straightforward but each plays a vital role in building layers of flavor and texture that make this dish so memorable.

Olive oil: Adds healthy fat and helps crisp up the potatoes and fish with a subtle fruitiness.

Old Bay seasoning: Brings a classic spicy, herby warmth that enhances both fish and potatoes perfectly.
Rubbed sage: Offers a gentle, earthy note that grounds the flavors and lifts the dish.
Kosher salt and fresh cracked pepper: Essential seasonings for balancing and brightening every component.

Baby gold potatoes: Tender yet sturdy, they soak up flavors and provide a delightful roasted bite.
Cod fillet: The centerpiece—mild, flaky, and delicious when baked just right.
Heavy cream: Creates a luscious, velvety base for the mustard sauce.

Chicken broth: Adds depth without overpowering the sauce’s delicate tanginess.
Capers: Burst of briny, piquant flavor that cuts through the richness.
Garlic, finely minced: A fragrant punch that makes the sauce irresistibly savory.

Dijon mustard: Provides smooth, tangy heat that defines the sauce’s character.
Stone-ground mustard: Adds a delightful texture and a robust, slightly spicy kick.
Lemon juice: Brightens the entire dish with a fresh citrus note.

Fresh chopped parsley and freshly sliced chives: Finishing touches that lend color and herbal freshness.
Lemon wedges: For serving, to add an extra burst of vibrant acidity right at the table.

How to Make Baked Cod with Mustard Cream Sauce and Roasted Baby Potatoes Recipe

Step 1: Heat the Oven

Start by preheating your oven to 400 degrees Fahrenheit. This temperature is perfect for roasting the baby potatoes until they have that irresistible golden crust, while also baking the cod gently alongside the sauce to perfection.

Step 2: Prepare the Seasoning Mix

In a small bowl, whisk together olive oil, Old Bay seasoning, rubbed sage, and generous pinches of kosher salt and fresh cracked pepper. This blend is your flavor foundation, infusing both the potatoes and fish with a lovely aromatic and savory profile.

Step 3: Roast the Baby Potatoes

Place the baby gold potatoes into a 9×13 baking dish and drizzle roughly two-thirds of your seasoning oil mix over them. Toss the potatoes well to coat each piece evenly. Roast for 20 to 25 minutes until they’re tender but still firm, providing the perfect base for your fish and sauce later.

Step 4: Make the Mustard Cream Sauce

While the potatoes are roasting, whisk together heavy cream, chicken broth, capers, minced garlic, Dijon mustard, stone-ground mustard, fresh lemon juice, and salt and pepper. This sauce is the star partner to the cod, bringing richness with a bright, tangy mustard pop that complements the mild fish beautifully.

Step 5: Add the Cod to the Potatoes

Once the potatoes have partially roasted, carefully create a small well in the center of the dish. Pat your cod fillets dry and drizzle the remaining seasoned oil over both sides, making sure they’re generously coated. Nestle the fish right into the potato well, allowing everything to cook together in harmony.

Step 6: Pour the Sauce and Finish Baking

Pour the luscious mustard cream sauce evenly over the cod and potatoes, ensuring every bit benefits from its creamy, tangy goodness. Return the baking dish to the oven and bake for an additional 10 to 15 minutes. You’ll know it’s done when the cod flakes easily with a fork and the potatoes are fork-tender throughout.

Step 7: Garnish and Serve

Finish your dish with a sprinkle of fresh chopped parsley and freshly sliced chives. Place some lemon wedges alongside so everyone can brighten their portions with a squeeze of citrus. Now it’s time to sit down and savor this heavenly combination!

How to Serve Baked Cod with Mustard Cream Sauce and Roasted Baby Potatoes Recipe

The image shows a white oval plate filled with small golden-brown potatoes and pieces of fish covered in a creamy mustard sauce with visible capers and green herbs sprinkled on top. Lemon wedges are placed on the plate, adding bright yellow contrasts to the dish. A woman's hand holds a fork and knife cutting into the saucy fish on the left side of the plate. The surface under the plate has a white marbled texture, and in the background there are a bowl of chopped green herbs and a small dish with lemon wedges. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

A sprinkle of fresh parsley and chives not only adds color to this dish but creates a wonderful herbaceous fresh note that cuts through the creamy sauce. Lemon wedges are essential—just a quick squeeze over the top awakens all the flavors and adds a vibrant finish.

Side Dishes

This meal stands beautifully on its own, but if you want to round it out, consider a simple green salad with a light vinaigrette or steamed seasonal vegetables like asparagus or green beans. Their crisp freshness will complement the richness of the mustard cream sauce wonderfully.

Creative Ways to Present

For a more elevated presentation, serve the fish and potatoes on individual warmed plates with small ramekins of extra mustard cream sauce on the side. Garnish with edible flowers or microgreens to add a visual wow factor that makes this comforting dish feel like a special occasion meal.

Make Ahead and Storage

Storing Leftovers

You can store leftover Baked Cod with Mustard Cream Sauce and Roasted Baby Potatoes Recipe in an airtight container in the refrigerator for up to 3 days. The potatoes might absorb some sauce, which tastes even better the next day!

Freezing

While baked potatoes don’t freeze well due to texture changes, you can freeze the baked cod and mustard cream sauce separately. Store them in freezer-safe containers for up to 2 months. Thaw overnight in the fridge before reheating gently.

Reheating

Reheat leftovers gently in a low oven (about 325°F) to prevent the cod from drying out. Alternatively, warm in a covered skillet over low heat, adding a splash of broth or cream if the sauce needs loosening. Avoid microwaving if possible to preserve texture.

FAQs

Can I use a different fish instead of cod?

Absolutely! While cod is ideal for its flaky texture and mild flavor, other white fish like haddock, halibut, or pollock work beautifully in this recipe.

Is there a substitute for heavy cream in the sauce?

You can substitute half-and-half or whole milk mixed with a bit of flour for thickening, but heavy cream provides the best richness and luxurious texture.

Can the recipe be made dairy-free?

Yes, use a coconut cream or cashew cream substitute instead of heavy cream, and make sure your broth is dairy-free. The flavor may differ slightly but will still be delicious.

How do I know when the cod is perfectly baked?

The cod is done when it flakes easily with a fork and turns opaque throughout. Overcooking will make it dry, so keep a close eye during the final bake.

Can I prepare this recipe ahead of time?

You can prep the sauce and seasonings beforehand and parboil the potatoes to save time. Assemble and bake fresh just before serving for the best texture and flavor.

Final Thoughts

There’s something so comforting and satisfying about the Baked Cod with Mustard Cream Sauce and Roasted Baby Potatoes Recipe. It’s a wonderful balance of flavors that feels special without being complicated. Whether you’re cooking for family, friends, or just treating yourself, this recipe promises a delightful meal full of warmth, zest, and heart. Give it a try—you won’t regret adding this gem to your culinary collection!