Creamed Onion Gratin - cooking recipe

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

Preparation

Heat oven to 350\u00b0.
Toss onions with oil in a 9\" x 11\" baking dish and season with salt and pepper.
Bake, stirring occasionally, until soft and lightly browned, about 1 hour; set aside.
Heat oven to broil.
Heat butter in a 2-qt. saucepan over medium-high heat; add flour, and cook, stirring, until smooth, about 1 minute.
Add cream and wine, and cook, stirring, until thickened, about 5 minutes.
Season sauce with salt, pepper, and nutmeg.
Pour sauce evenly over onions.
Sprinkle with parmesan, dot with Gorgonzola, and sprinkle with paprika; broil until cheese is melted and golden brown on top, about 2 minutes.