Green Bean Casserole

Green Bean Casserole



For the topping:

2 medium onions, thinly sliced

1/4 cup all-purpose flour

2 tablespoons panko bread crumbs

1 teaspoon kosher salt

Nonstick cooking spray

For beans and sauce:

2 tablespoons plus 1 teaspoon kosher salt, divided

1 pound fresh green beans, rinsed, trimmed and halved

2 tablespoons unsalted butter

12 ounces mushrooms, trimmed and cut into 1/2-inch pieces

1/2 teaspoon freshly ground black pepper

2 cloves garlic, minced

1/4 teaspoon freshly ground nutmeg

2 tablespoons all-purpose flour

1 cup chicken broth

1 cup half-and-half



Preheat the oven to 475F. Combine the onions, flour, panko and salt

in a large mixing bowl and toss to combine. Coat a sheet pan with

nonstick cooking spray and evenly spread the onions on the pan. Place

the pan on the middle rack of the oven and bake until golden brown,

approximately 30 minutes. Toss the onions 2 to 3 times during cooking.

Once done, remove from the oven and set aside until ready to use.

Turn the oven down to 400F.



While the onions are cooking, prepare the beans. Bring a gallon of

water and 2 tablespoons of salt to a boil in an 8-quart saucepan. Add

the beans and blanch for 5 minutes. Drain in a colander and immediately

plunge the beans into a large bowl of ice water to stop the cooking.

Drain and set aside.



Melt the butter in a 12-inch cast iron skillet set over medium-high

heat. Add the mushrooms, 1 teaspoon salt and pepper and cook, stirring

occasionally, until the mushrooms begin to give up some of their

liquid, approximately 4 to 5 minutes. Add the garlic and nutmeg and

continue to cook for another 1 to 2 minutes. Sprinkle the flour over

the mixture and stir to combine. Cook for 1 minute. Add the broth and

simmer for 1 minute. Decrease the heat to medium-low and add the

half-and-half. Cook until the mixture thickens, stirring occasionally,

approximately 6 to 8 minutes.



Remove from the heat and stir in 1/4 of the onions and all of the

green beans. Top with the remaining onions. Place into the oven and

bake until bubbly, approximately 15 minutes. Remove and serve

immediately.