Baked Halibut Recipe Mayonnaise: Moist Fillets With Golden Crust

This baked halibut delivers moist, flaky fillets with a perfectly golden crust every time. The mayonnaise coating locks in natural juices while creating a delicious, crispy topping.

With a simple preparation and precise baking time, this method ensures restaurant-quality results. The mayonnaise forms a seal that prevents drying, guaranteeing tender fish with exceptional flavor.

Ingredients for Baked Halibut Recipe Mayonnaise

Fresh halibut and a few pantry staples create this elegant, foolproof seafood dish.

Halibut quality is non-negotiable here. Wild-caught from Alaska or Pacific Northwest delivers the best texture and flavor. Look for fillets that are opaque white with no brown spots—a sign of freshness. Most Whole Foods or specialty seafood markets will have it pre-cut, but ask them to skin it for you. The mayonnaise acts as a barrier, so don’t substitute low-fat—full-fat Duke’s or Hellmann’s are ideal for the perfect seal.

No halibut? Cod or mahi-mahi work well with the same cooking time. Out of Dijon? Whole grain mustard at half the amount adds texture. Fresh dill is key, but dried dill at one-third the quantity can substitute. The panko is essential for crunch—don’t swap for regular breadcrumbs. For extra richness, add a pinch of Old Bay seasoning to the topping mixture.

This bakes best served immediately, but leftovers keep 2-3 days in the fridge. Reheat gently in a 300°F oven to avoid drying. The topping can be prepped 1 day ahead—store covered at room temperature. Halibut fillets can be frozen for up to 3 months if wrapped tightly.

Step-by-Step Instructions for Baked Halibut With Mayonnaise

Master the technique for perfectly moist halibut with a crisp, golden crust every time.

Step 1: Prepare the Halibut Fillets

Preheat your oven to 400°F to ensure even cooking and proper crust formation. Pat the 1.5 lb halibut fillets completely dry with paper towels—this is crucial for the topping to adhere properly and for achieving that desired golden finish.

Season both sides of the fillets with 0.5 tsp salt and 0.25 tsp black pepper. Place them on a parchment-lined baking sheet, ensuring they don’t touch. This spacing allows heat to circulate evenly, preventing steaming and promoting crispiness.

Step 2: Create the Mayonnaise Topping

In a medium bowl, combine 0.5 cup mayonnaise, 2 tbsp Dijon mustard, 1 tbsp lemon juice, minced 2 cloves garlic cloves, 2 tbsp fresh dill, 1 tsp lemon zest, and 0.5 tsp paprika. Whisk until the mixture is smooth and fully integrated.

The mayonnaise serves as the base for moisture retention while the Dijon and lemon add brightness. The garlic and dill provide aromatic depth, and the paprika contributes a subtle earthiness. Spread this mixture evenly over the top of each fillet, ensuring full coverage.

Step 3: Apply the Crunchy Breadcrumb Topping

In a separate bowl, mix 0.5 cup panko breadcrumbs with 0.25 cup grated parmesan cheese. The panko’s coarse texture ensures extra crunch, while the parmesan adds a savory, umami-rich layer. Sprinkle this mixture evenly over the mayonnaise-coated fillets, pressing lightly to help it adhere.

Drizzle 1 tbsp olive oil over the breadcrumb topping. This not only adds flavor but also promotes even browning, ensuring the crust achieves that perfect golden finish.

Step 4: Bake to Perfection

Bake the fillets in the preheated oven for 12-15 minutes, or until the topping is golden brown and the halibut flakes easily with a fork. Avoid overbaking—halibut continues to cook slightly after removal from the oven, and you want to preserve its moist, tender texture.

Check for doneness by inserting a fork into the thickest part of a fillet. If it flakes apart effortlessly and the internal temperature reaches 145°F, it’s ready. The topping should be crisp and deeply golden, indicating the panko has fully toasted.

Step 5: Rest and Serve

Remove the halibut from the oven and let it rest for 2-3 minutes on the baking sheet. This brief rest allows the juices to redistribute within the fillets, ensuring each bite remains moist and flavorful.

Serve immediately while the crust is still crisp. The contrast between the tender, flaky fish and the crunchy, golden topping is what makes this dish exceptional. Garnish with additional fresh dill if desired for a pop of color and extra aroma.

Perfect Pairings for This Recipe

Side Dishes

Pair your baked halibut with mayonnaise with light, fresh sides to balance the dish’s richness. A crisp green salad with lemon vinaigrette adds brightness, while roasted asparagus or steamed broccoli brings a satisfying crunch. For a heartier option, garlic mashed potatoes or wild rice pilaf complement the fish’s creamy texture beautifully.

Drink Pairings

A glass of dry white wine, like Sauvignon Blanc or Chardonnay, enhances the halibut’s delicate flavors. For non-alcoholic choices, sparkling water with citrus or iced green tea keeps the meal refreshing. The crispness of these drinks cuts through the mayonnaise’s richness, creating a harmonious bite.

Complementary Flavors

Boost the dish with zesty or herby accents. A squeeze of lemon or a sprinkle of fresh dill brightens the halibut, while capers or pickled red onions add a tangy contrast. For extra depth, a dash of Dijon mustard in the mayonnaise topping ties everything together deliciously.