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Spinach Gratin

  • Level: Easy
  • Total: 1 hr 35 min
  • Prep: 10 min
  • Inactive: 45 min
  • Cook: 40 min
  • Yield: 8 servings
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Ingredients

4 tablespoons (1/2 stick) unsalted butter

4 cups chopped yellow onions (2 large)

1/4 cup flour

1/4 teaspoon grated nutmeg

1 cup heavy cream

2 cups milk

3 pounds frozen chopped spinach, defrosted (5 (10-ounce) packages)

1 cup freshly grated Parmesan cheese

1 tablespoon kosher salt

1/2 teaspoon freshly ground black pepper

1/2 cup grated Gruyere cheese

Directions

  1. Preheat the oven to 425 degrees F. Melt the butter in a heavy-bottomed saute pan over medium heat. Add the onions and saute until translucent, about 15 minutes. Add the flour and nutmeg and cook, stirring, for 2 more minutes. Add the cream and milk and cook until thickened. Squeeze as much liquid as possible from the spinach and add the spinach to the sauce. Add 1/2 cup of the Parmesan cheese and mix well. Season, to taste, with salt and pepper. Transfer the spinach to a baking dish and sprinkle the remaining 1/2 cup Parmesan and the Gruyere on top. Bake for 20 minutes until hot and bubbly. Serve hot.
  2. Note: This recipe has been updated and may differ from what was originally broadcast or published.
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