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Step-by-step process showing how to properly layer the seafood, cream, and cheese in the baking dish

Easy Seafood Casserole

A creamy, cheesy seafood casserole with haddock, shrimp, and scallops—quick, comforting, and perfect for family dinners.
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 4 portions
Course: Main Course
Cuisine: American, Seafood
Calories: 380
Ingredients Equipment Method Notes

Ingredients
  

  • 8 oz haddock cleaned and skinned (or cod)
  • 1 lb scallops preferably dry-packed
  • 1 lb large shrimp cleaned and deveined
  • 3-4 cloves garlic minced
  • 0.5 cup heavy cream use up to ¾ cup for extra creaminess
  • 0.5 cup shredded Swiss cheese or mozzarella
  • 2 tbsp grated Parmesan cheese
  • paprika for color and subtle spice
  • sea salt and black pepper to taste

Equipment

  • Baking dish (7×11 inch)
  • oven

Method
 

  1. Preheat oven to 375°F (190°C).
  2. Spray a 7×11 inch baking dish with nonstick spray.
  3. Cut haddock into 1.5-inch chunks and arrange evenly in the dish.
  4. Add scallops and shrimp, distributing evenly.
  5. Season with salt, pepper, and minced garlic.
  6. Pour heavy cream over the seafood.
  7. Sprinkle shredded Swiss cheese over the top.
  8. Dust with paprika and top with grated Parmesan cheese.
  9. Bake uncovered for 15–20 minutes, checking at 15 minutes.
  10. Seafood should be opaque and cooked through. Avoid overbaking.
  11. Serve hot with a squeeze of fresh lemon if desired.

Notes

Dry seafood well to prevent excess liquid. Add cream cheese for extra richness. Swap haddock with cod or pollock. Can be frozen before baking—thaw overnight and bake as directed.