Spinach Gratin

From Wild Oats Natural Marketplace.

• Ready In: 35 mins
• Serves: 4

Ingredients

• 2  tablespoons unsalted butter
• 2  cups yellow onions, chopped
• 1⁄8 cup flour
• 1⁄4 teaspoon nutmeg, grated
• 1⁄2 cup heavy cream
• 1  cup milk
• 4  bunches fresh spinach
• 1⁄2 cup parmesan cheese, freshly grated
• 1⁄2 tablespoon kosher salt
•  fresh ground black pepper
• 1⁄2 cup gruyere cheese, grated

Directions

1. Preheat the oven to 425 degrees F. Melt the butter in a heavy-bottomed sauté pan on medium heat. Add the onions and cook for about 5 to 6 minutes or until translucent. Add the spinach to the sauce, cook for about a minute or until the spinach is just wilted.
2. Add the flour and nutmeg, stir and cook for 2 more minutes. Add the cream and milk and cook until thickened. Add 1/2 of the Parmesan cheese and mix well. Season with salt and pepper and transfer to a baking dish and sprinkle the remaining Parmesan and the Gruyere. Bake for 20 minutes until hot and bubbly. Serve immediately.