Ultimate Fish Casserole Recipe: Creamy, Flaky & Irresistible! 🍲🐟


 

Few dishes deliver comfort and elegance quite like a perfectly baked fish casserole. This recipe combines tender flaky fish, a rich creamy sauce, and a golden, buttery topping for a meal that’s both hearty and sophisticated.

Whether you’re feeding a family, impressing guests, or just craving cozy seafood goodness, this casserole is a guaranteed crowd-pleaser. Let’s dive in!

Why You’ll Love This Fish Casserole

✅ Restaurant-quality flavor – Luxuriously creamy with a crispy topping
✅ Easy to customize – Use your favorite fish or add veggies
✅ Meal-prep friendly – Assemble ahead and bake when ready
✅ Perfect for any occasion – Fancy enough for dinner parties, simple enough for weeknights

Ingredients You’ll Need

For the Casserole Base:

  • 1.5 lbs white fish fillets (cod, haddock, tilapia, or halibut work great)

  • 1 tbsp lemon juice (plus extra lemon slices for garnish)

  • 1 tsp Old Bay seasoning (or paprika + garlic powder)

  • Salt & pepper to taste

For the Creamy Sauce:

  • 3 tbsp butter

  • 3 tbsp flour

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

  • ½ cup fish or vegetable broth

  • 1 tsp Dijon mustard

  • ½ cup shredded Parmesan

  • ¼ cup fresh parsley, chopped

For the Crunchy Topping:

  • 1 cup Panko breadcrumbs

  • ¼ cup grated Parmesan

  • 2 tbsp melted butter

  • 1 tsp garlic powder

Step-by-Step Instructions



;