Ingredients
3tbspwhipped butter
1cuponion,finely chopped
¼cupflour,use Gluten free AP flour for GF
¼tspfresh nutmeg,grated
3cups2% milk
3lbsfrozen chopped spinach,(3 16-oz packages), defrosted
¾cupparmesan cheese,freshly grated
1tbspkosher salt
½tspfreshly ground black pepper
½cupSwiss or Gruyere cheese,shredded
Preparation
Preheat the oven to 425 degrees F.
In a heavy-bottomed saute pan, melt the butter over medium heat. Add the onions and sauté for about 10 to 12 minutes until translucent.
Add the flour and nutmeg, then cook for 2 more minutes, stirring occasionally.
Add the milk and cook for about 5 to 7 minutes until thickened.
Squeeze as much liquid as possible from the spinach and add the spinach to the sauce.
Add ½ 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 ¼ cup Parmesan and the Swiss cheese on top. Bake for 20 minutes until hot and bubbly. Serve hot.