Creamed Onion Gratin

Originally from here: http://www.saveur.com/article/Recipes/Creamed-Onion-Gratin

• Ready In: 1 hr 20 mins
• Serves: 8

Ingredients

• 2  yellow onions, cored & quartered
• 1⁄4 cup olive oil
• 1⁄2 teaspoon salt, kosher and freshly ground black pepper, to taste
• 2  tablespoons unsalted butter
• 2  tablespoons flour
• 1  cup heavy cream
• 1⁄4 cup dry white wine
• 1⁄4 teaspoon nutmeg, freshly grated, to taste
• 1⁄2 cup parmesan cheese, finely grated
• 3  ounces gorgonzola, crumbled
• 1⁄4 teaspoon paprika

Directions

1. Heat oven to 350°.
2. Toss onions with oil in a 9″ × 11″ baking dish and season with salt and pepper.
3. Bake, stirring occasionally, until soft and lightly browned, about 1 hour; set aside.
4. Heat oven to broil.
5. Heat butter in a 2-qt. saucepan over medium-high heat; add flour, and cook, stirring, until smooth, about 1 minute.
6. Add cream and wine, and cook, stirring, until thickened, about 5 minutes.
7. Season sauce with salt, pepper, and nutmeg.
8. Pour sauce evenly over onions.
9. Sprinkle with parmesan, dot with Gorgonzola, and sprinkle with paprika; broil until cheese is melted and golden brown on top, about 2 minutes.