Creamy Portuguese Bacalhau Casserole with Cheesy Potato Top
This Creamy Portuguese Bacalhau Casserole combines flaky salted cod with rich, cheesy mashed potatoes, baked to golden perfection. A comforting dish perfect for family gatherings.

Preparation
Get these tasks done before you start cooking.
Desalting the Bacalhau
- 1
Soak Cod
Soak salted cod in cold water for 24 hours, changing the water 2-3 times.
- 2
Drain and Dry
After soaking, drain and pat dry.
- 3
Flake Cod
Flake the cod into large pieces, removing any bones.
Tip: Ensure the cod is desalted thoroughly to avoid an overly salty casserole.
Preparing the Cheesy Potato Top
- 1
Boil Potatoes
Boil the potatoes in salted water until tender.
- 2
Mash Potatoes
Drain and mash the potatoes with milk, butter, and salt.
- 3
Add Cheese
Stir in 1 cup of the shredded mozzarella cheese.
Tip: Save a cup of the potato boiling water to help adjust the texture of the mash.
How to Make Creamy Portuguese Bacalhau Casserole with Cheesy Potato Top
Total time: 2 h 20 min · Yields 6 servings
- 1
Sauté the Cod
Heat olive oil in a skillet, add onions and garlic, cook until translucent. Add the flaked cod and sauté for 5 minutes.
- 2
Build the Casserole
Layer the cod mixture in a baking dish, pour over heavy cream, then top with cheesy mashed potatoes.
- 3
Bake
Sprinkle remaining mozzarella cheese over potatoes and bake at 350°F until golden brown and bubbly, about 35 minutes.
Chef's Tips
Frequently asked questions
How long can I store leftovers?
Store leftovers in an airtight container in the refrigerator for up to 3 days.
Can I make this ahead?
Yes, prepare the dish up to the baking step, cover, and refrigerate. Bake just before serving.
Is there a substitute for salted cod?
A mild white fish like haddock can be used, though the flavor will differ.
Can this dish be frozen?
While the casserole can be frozen, the texture of potatoes might change. For best results, consume fresh.
Can I use less cheese?
Yes, adjust cheese to your preference or use a lower-fat cheese for a lighter option.
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