Dive into the comforting decadence of this Halibut Casserole, a seafood lover's dream packed with fresh, flaky halibut and vibrant vegetables like onion, celery, and carrot. Baked in a creamy, herb-infused white sauce and topped with a golden crust of Parmesan, cheddar, and panko breadcrumbs, this dish strikes the perfect balance between rich flavor and satisfying texture. With just 20 minutes of prep time and easy-to-follow steps, this casserole is a hassle-free way to bring elegant yet hearty flavors to your dinner table. Ideal for feeding a crowd or indulging in a cozy family meal, this recipe will quickly become a go-to favorite. Serve it with a crisp green salad or roasted seasonal vegetables for a complete, satisfying feast!
Preheat your oven to 375°F (190°C). Grease a 9x13-inch baking dish lightly with olive oil or butter.
Season the halibut fillet with 1/2 teaspoon of salt and 1/4 teaspoon of ground black pepper. Set aside.
In a large skillet over medium heat, heat 2 tablespoons of olive oil. Add the diced onion, minced garlic, celery, and carrot. Cook for 5-7 minutes, stirring occasionally, until the vegetables are softened.
Transfer the cooked vegetables to the prepared baking dish and spread them evenly across the bottom.
In the same skillet, melt the 3 tablespoons of butter over medium heat. Stir in the flour and cook for 1-2 minutes to form a roux.
Slowly whisk in the whole milk, ensuring no lumps remain. Cook the sauce, stirring frequently, until it thickens, about 3-5 minutes.
Season the sauce with the remaining 1/2 teaspoon of salt, 1/4 teaspoon of ground black pepper, and 2 tablespoons of chopped fresh parsley. Remove from heat.
Cut the seasoned halibut fillet into 2-inch chunks and arrange them atop the vegetable layer in the baking dish.
Pour the prepared sauce evenly over the halibut and vegetables, ensuring everything is well-coated.
In a small bowl, combine the grated Parmesan cheese, shredded cheddar cheese, and panko breadcrumbs. Mix well.
Sprinkle the cheese and breadcrumb mixture evenly over the top of the casserole.
Bake in the preheated oven for 30-35 minutes, or until the topping is golden brown and the casserole is bubbling around the edges.
Let the casserole rest for 5 minutes before serving. Garnish with extra parsley if desired.
Calories |
2452 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 141.4 g | 181% | |
| Saturated Fat | 66.2 g | 331% | |
| Polyunsaturated Fat | 4.1 g | ||
| Cholesterol | 644 mg | 215% | |
| Sodium | 4944 mg | 215% | |
| Total Carbohydrate | 87.0 g | 32% | |
| Dietary Fiber | 10.0 g | 36% | |
| Total Sugars | 32.3 g | ||
| Protein | 202.9 g | 406% | |
| Vitamin D | 38.2 mcg | 191% | |
| Calcium | 1933 mg | 149% | |
| Iron | 6.2 mg | 34% | |
| Potassium | 4649 mg | 99% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.