Ingredients

The following ingredients have 13 Servings
  • 3 tbsp whipped butter (I used Land O Lakes)
  • 1 cup finely chopped onion
  • 1/4 cup flour (use Gluten free AP flour for GF)
  • 1/4 tsp fresh grated nutmeg
  • 3 cups 2% milk
  • 3 lbs frozen chopped spinach, defrosted (I used 3 16-oz packages )
  • 3/4 cup freshly grated Parmesan cheese
  • 1 tbsp kosher salt
  • 1/2 tsp freshly ground black pepper
  • 1/2 cup shredded Swiss or Gruyere cheese

Instruction

  • Preheat the oven to 425F°.
  • In a heavy-bottomed saute pan melt the butter over medium heat. Add the onions and sauté until translucent, about 10 - 12 minutes.
  • Add the flour and nutmeg; cook 2 more minutes, stirring occasionally.
  • Add the milk and cook until thickened, about 5 - 7 minutes.
  • 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 large baking dish and sprinkle the remaining 1/4 cup Parmesan and the Swiss cheese on top.  Bake for 20 minutes until hot and bubbly. Serve hot.