Tuna Noodle Casserole

Description
Contributed by Jenn B aka Mom2sam and Tiny at World Recipes Y-Group
 * Source: Gourmet, May 2004
 * Active time: 1 hour | Start to finish: 1½ hours
 * Makes 4 to 6 servings

Ingredients

 * 1 medium onion, finely chopped
 * 4½ tablespoons unsalted butter
 * 10 oz mushrooms, trimmed and sliced ¼ inch thick (4 cups)
 * 2 teaspoons soy sauce
 * ¼ cup sherry
 * ¼ cup all-purpose flour
 * 2 cups low-sodium chicken broth
 * 1 cup whole milk
 * 2 teaspoons fresh lemon juice
 * ¼ teaspoon salt
 * 1 (6-oz) can tuna in olive oil, drained
 * 6 oz dried curly egg noodles (preferably Pennsylvania Dutch-style; about 3¼ cups)
 * 1½ cups coarse fresh bread crumbs (from 3 slices firm white sandwich bread)
 * 4 oz coarsely grated cheddar (1 cup)
 * 1 tablespoon vegetable oil

Directions

 * 1) Put oven rack in middle position and preheat oven to 375°F.
 * 2) Butter a shallow 2-quart baking dish.
 * 3) Cook onion in 1½ tablespoons butter with a pinch of salt in a 12-inch heavy skillet over moderately low heat, covered, stirring occasionally, until softened, about 5 minutes.
 * 4) Increase heat to moderately high and add mushrooms, then sauté, stirring occasionally, until mushrooms begin to give off liquid, about 2 minutes.
 * 5) Add soy sauce and continue to sauté mushrooms, stirring, until liquid mushrooms give off is evaporated.
 * 6) Add sherry and boil, stirring occasionally, until evaporated.
 * 7) Remove from heat.
 * 8) Melt remaining 3 tablespoons butter in a 2- to 3-quart heavy saucepan over moderately low heat and whisk in flour, then cook roux, whisking, 3 minutes.
 * 9) Add broth in a stream, whisking, and bring to a boil, whisking.
 * 10) Whisk in milk and simmer sauce, whisking occasionally, 5 minutes.
 * 11) Stir in mushroom mixture, lemon juice, and salt.
 * 12) Flake tuna into sauce and stir gently.
 * 13) Season sauce with salt and pepper.
 * 14) Cook noodles in a 5- to 6-quart pot of boiling salted water until al dente.
 * 15) Drain noodles in a colander and return to pot.
 * 16) Add sauce and stir gently to combine.
 * 17) Transfer mixture to baking dish, spreading evenly.
 * 18) Toss together bread crumbs and cheese in a bowl.
 * 19) Drizzle with oil and toss again, then sprinkle evenly over casserole.
 * 20) Bake until topping is crisp and sauce is bubbling, 20 to 30 minutes.