This isn't your typical tuna casserole. It is elevated a bit with sherry and soy sauce, with a Cheddar cheese and bread crumb topping that is to die for!
5 T. unsalted butter, divided, + butter for baking dish, + 1 T. melted
1 1/2 medium yellow onions, diced
salt and freshly ground black pepper
5 c. white button mushrooms, trimmed and sliced
1/4 c. sherry
2 t. soy sauce
1/4 c. all-purpose flour
2 c. low-sodium chicken broth/ stock
1 c. whole milk
1 T. freshly squeezed lemon juice
1 c. frozen baby peas
10 oz. canned tuna packed in olive oil, drained
3 c. dry egg noodles
2 c. grated Cheddar cheese
3/4 c. Panko bread crumbs
Preheat oven to 375 degrees. Grease a 2 quart baking dish.
In a large heavy bottomed skillet, melt 1 T. butter over medium-high heat. Saute onions until translucent and fragrant; season with salt and pepper. Add mushrooms and cook, stirring occasionally about 2 minutes. Stir in sherry and soy sauce; cook until the most of the liquid has evaporated. Remove from the heat; set aside.
Melt remaining 4 T. butter, in large heavy bottomed saucepan over medium-low heat. Whisk in the flour; cook about 2 - 3 minutes. Slowly add the chicken broth/stock, whisking constantly. Bring to a boil; whisk in the milk. Reduce heat to a simmer; continue cooking 5 minutes.
Add mushroom mixture to the white sauce; stir in the lemon juice. Season sauce with salt and pepper, to taste. Add the drained tuna and the peas; stir just to combine. Check seasoning and add more salt and pepper, if needed. Remove from heat.
Cook the egg noodles in a large pot of well salted boiling water according to package directions, just until al dente. Drain; return it to the saucepan. Add the sauce, stirring gently to coat the noodles. Transfer the mixture to the prepared baking dish.
In a mixing bowl, toss together the grated Cheddar cheese and the bread crumbs. Drizzle with the 1 T. melted butter; toss. Sprinkle evenly over the casserole.
Bake until the topping is crisp and the sauce is bubbling.
4-6 servings.