PASTA AND LAMB CASSEROLE (PASTITSIO)

Pasta and Lamb Casserole (Pastitsio) image

Provided by Maggie Ruggiero

Categories Tomato Bake Sauté Dinner Casserole/Gratin Parmesan Ground Lamb Potluck Noodle Gourmet Peanut Free Tree Nut Free Soy Free

Yield Makes 12 to 16 servings

Number Of Ingredients 23

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Ingredients

For meat sauce:
2 medium onions, finely chopped
2 tablespoons olive oil
2 large garlic cloves, finely chopped
2 pounds ground lamb
1 (28-ounces) can whole tomatoes in juice
1 (15-ounces) can whole tomatoes in juice
4 thyme sprigs
1 1/4 teaspoons ground cinnamon
1 1/4 teaspoons ground allspice
1/2 teaspoon grated nutmeg
1/4 teaspoon ground cloves
For béchamel sauce:
7 tablespoons unsalted butter
6 tablespoons all-purpose flour
7 cups whole milk
3/4 teaspoon grated nutmeg
1 cup grated Parmigiano-Reggiano or kefalotyri cheese (2 ounces)
5 large egg yolks
For pasta:
2 pounds ziti
1 3/4 cups coarse fresh bread crumbs (from 4 slices firm white sandwich bread)
1/4 cup grated Parmigiano-Reggiano or kefalotyri cheese

Steps:

Make meat sauce:
Cook onions in oil in a 12-inch heavy skillet over medium heat, stirring frequently, until softened, about 7 minutes. Add garlic and cook, stirring, 1 minute. Increase heat to high, then stir in lamb and cook, stirring occasionally and breaking up any lumps with a fork, until meat starts to brown, about 15 minutes.
Meanwhile, drain both cans of tomatoes, reserving juice, and chop.
Pour off excess fat from skillet, then stir in tomatoes with their juice, thyme, spices, and 1 1/2 teaspoons salt. Simmer over low heat, partially covered, until some liquid has evaporated but sauce is still moist, about 40 minutes. Discard thyme.
Make béchamel while meat sauce simmers:
Melt butter in a heavy medium pot over medium heat. Whisk in flour, then cook roux, whisking frequently, until pale golden, about 6 minutes.
Meanwhile, heat milk in a heavy medium saucepan until just about to boil. Add milk to roux in a stream, whisking constantly until very smooth. Bring sauce to a boil over medium heat, whisking, then cook, whisking, 1 minute. Remove from heat and stir in nutmeg, cheese, and 1 tablespoon salt.
Lightly beat yolks in a bowl. Gradually whisk in 2 cups béchamel, then whisk yolk mixture into remaining béchamel in saucepan. Cover with a round of buttered wax paper (buttered side down).
Cook pasta and assemble pastitsio:
Preheat oven to 375°F with rack in middle. Cook ziti in a pasta pot of boiling salted water (3 tablespoons salt for 6 quarts water) until al dente.
Drain pasta, then transfer to a large bowl and stir in 1 cup béchamel.
Arrange one third of pasta lengthwise in 1 layer in a large (17-by 11-inch) baking pan (about 2 inches deep).
Add half of meat sauce (about 3 cups) to baking pan, spreading evenly over pasta.
Make another layer of pasta and top with remaining meat sauce, then arrange remaining pasta on top.
Spread remaining béchamel (about 6 cups) evenly over top layer of pasta.
Stir together bread crumbs and cheese and sprinkle evenly over top of pastitsio.
Bake until crumbs are golden brown and sauce is bubbling, about 45 minutes.