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Scalloped Oyster Casserole: A Classic Creamy Seafood Bake

Scalloped Oyster Casserole is an old-fashioned seafood dish made with tender oysters, buttery cracker crumbs, cream, seasonings, and a golden baked topping. It is rich, savory, slightly briny, and comforting. The oysters bring a delicate ocean flavor, while the creamy sauce and crisp crumbs make the casserole feel warm and satisfying.

This dish is often served during holidays, family dinners, Sunday meals, or special gatherings. It is simple to prepare, but it tastes elegant because oysters naturally give the casserole a special flavor. The key is not to overpower the oysters. A good scalloped oyster casserole should be creamy, buttery, lightly seasoned, and baked just long enough for the top to become golden and the oysters to become tender.

What Is Scalloped Oyster Casserole?

Scalloped Oyster Casserole is a baked dish made by layering oysters with cracker crumbs and a cream-based mixture. The word “scalloped” usually refers to food baked in a creamy sauce with a crumb or browned topping. In this recipe, crushed crackers replace heavy breading and create a soft, buttery texture inside with a crisp golden surface.

It is not a complicated seafood recipe. The beauty of this casserole is its simplicity. You only need oysters, crackers, butter, cream, and a few seasonings to create a dish that feels rich and traditional.

Ingredients

Main Ingredients

2 pints fresh shucked oysters, drained but oyster liquid reserved
3 cups crushed buttery crackers, such as saltines or round butter crackers
½ cup unsalted butter, melted
1 cup heavy cream
½ cup whole milk
½ cup reserved oyster liquid
1 teaspoon Worcestershire sauce
½ teaspoon salt, or to taste
½ teaspoon black pepper
¼ teaspoon paprika
¼ teaspoon garlic powder, optional
¼ teaspoon onion powder, optional
1 tablespoon fresh parsley, chopped
1 tablespoon lemon juice, optional

Optional Additions

¼ cup grated parmesan cheese
2 tablespoons finely chopped celery
2 tablespoons finely chopped onion
A pinch of cayenne pepper
A few drops of hot sauce
Fresh lemon wedges for serving

Step 1: Prepare the Oysters

Start by draining the oysters through a fine strainer placed over a bowl. Do not throw away the oyster liquid. This liquid, often called oyster liquor, has a natural seafood flavor that makes the casserole taste richer.

Check the oysters carefully for any tiny shell pieces. If needed, gently rinse them with a small amount of cold water, but avoid over-rinsing because you do not want to wash away all their natural flavor.

Set the oysters aside while you prepare the crumb mixture.

Step 2: Prepare the Cracker Crumbs

Place the crackers in a large zip-top bag and crush them with a rolling pin. You can also pulse them in a food processor, but do not make them too fine. A mix of small crumbs and slightly larger pieces gives the casserole better texture.

Transfer the crumbs to a mixing bowl.

Pour melted butter over the crumbs and stir until evenly coated. The crumbs should look moist and buttery but not greasy.

This buttery cracker mixture will be used both inside the casserole and on top.