Seafood Chowder Casserole || Gracefult Kitchen

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Seafood Chowder Casserole

Fish

New England seafood chowder inspired the flavors here, but we've enhanced them further with Gruyère cheese and a crispy crumb topping. We like the combination of shrimp, cod and crab, but feel free to experiment with other types of seafood--scallops, clams and mahi-mahi would also work well.

Ingredients

1 tablespoon plus 1 teaspoon neutral oil, such as canola or avocado, divided
2 cups sliced leeks, rinsed (about 2 small)
1 cup sliced celery
2 large white potatoes (about 1 3/4 pounds), peeled and cut into 3/4-inch pieces
2 cups seafood stock or clam juice (see Tips)
2 teaspoons Old Bay seasoning, divided
½ teaspoon freshly ground pepper
1 cup low-fat milk
¼ cup all-purpose flour
1 tablespoon Dijon mustard
1 pound raw shrimp (21-25 count), peeled, deveined and chopped (about 2 cups; see Tips)
12 ounces diced cod (see Tips) or other firm white fish
8 ounces pasteurized crabmeat, preferably jumbo, drained
2 cups shredded Gruyere cheese, divided
2 tablespoons chopped fresh dill or 2 teaspoons dried, divided
1/2 cup coarse whole-wheat breadcrumbs (see Tips)

Description

Preheat oven to 400 degrees F. Coat a 9-by-13-inch (or similar 3-quart) baking dish with cooking spray.
Heat 1 tablespoon oil in a Dutch oven over medium-high heat. Add leeks and celery and cook, stirring often, until the leeks are softened, 2 to 3 minutes. Stir in potatoes, stock (or clam juice), 1 teaspoon Old Bay and pepper. Cover and bring to a simmer over high heat. Reduce heat to medium-low and simmer, covered, until the potatoes are just tender, 6 to 8 minutes.
Whisk milk, flour and mustard in a measuring cup. Stir into the potato mixture, increase heat to medium-high and bring to a simmer, stirring constantly. Stir in shrimp and fish and return to a simmer, stirring often; cook until the seafood is just cooked through, about 3 minutes. Remove from the heat and stir in crab, 1 1/2 cups Gruyere and half the dill.
Transfer the seafood mixture to the prepared baking dish. Mix breadcrumbs with the remaining 1 teaspoon each oil and Old Bay. Stir in the remaining 1/2 cup Gruyere and the remaining dill. Sprinkle the breadcrumb mixture over the casserole.
Bake the casserole until it is bubbling and golden brown, 20 to 30 minutes. Let stand 10 minutes before serving.