Description
Delectable, this Spinach au Gratin is a perfect side for Thanksgiving and Christmas, or for entertaining any time of the year!
Ingredients
Scale
- 3 large yellow onions, finely chopped
- 2 Tbsp. olive oil
- 2 Tbsp. unsalted butter, plus more for preparing gratin dish
- 1 tsp. salt
- 1/2 tsp. ground black pepper
- 1/4 cup flour
- 1/4 tsp. nutmeg
- 3 lbs. frozen spinach, defrosted and thoroughly drained (squeeze dried)
- 1 cup whole milk
- 1/2 cup half & half
- 1 cup Parmesan cheese, freshly grated
- 1/2 cup Swiss cheese, freshly grated
Instructions
- Preheat oven to 375 degrees and butter gratin dish.
- In a heavy bottom skillet, sauté the onion in olive oil and butter for 10 – 15 minutes over medium heat.
- Sprinkle flour and nutmeg over the onions and continue sautéing the mixture for 30 seconds.
- Stir the milk and half & half into the onion mixture.
- Add the salt, pepper, and spinach to the pan and stir until the ingredients are combined.
- Add half of the Parmesan cheese to the spinach mixture and stir.
- Transfer to the buttered gratin dish.
- Sprinkle the remaining Parmesan and the Swiss on top.
- Bake for 15 – 20 minutes, until hot and bubbly.
- Serve and enjoy!