Ingredients

  • 1 pound maitake mushrooms, torn into large pieces
  • 7 ounces store-bought frozen sweet potato fries, such as Alexia
  • 1/4 cup extra-virgin olive oil
  • 2 tablespoons unsalted butter
  • 2 tablespoons all-purpose flour
  • 3/4 cup whole milk
  • Salt
  • Pepper
  • 3 1/2 ounces Fontina cheese, shredded (1 cup)

Method

  • Preheat the oven to 425.
  • In a 3-quart baking dish, toss the mushrooms with the fries and olive oil.
  • Bake until the fries are crispy, about 45 minutes.
  • Remove from the oven and turn on the broiler.
  • Meanwhile, in a small saucepan, melt the butter.
  • Add the flour and cook, whisking, until golden, 5 minutes.
  • Whisk in the milk and cook until thickened, about 3 minutes.
  • Season with salt and pepper.
  • Spoon the gravy over the mushrooms and fries and top with the cheese.
  • Broil 6 inches from the heat until golden, about 5 minutes.