Serves 4
- 2 tbsp butter
- 1/3 cup finely chopped onion
- 1 heaping TBSP flour
- 1 cup 2% milk
- 1 16-oz package frozen chopped spinach, defrosted
- 3/4 cup freshly grated Parmesan cheese
- 1 tsp kosher salt
- ground black pepper to taste
- 1/2 cup shredded Swiss cheese
Preheat the oven to 425°.
*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; 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