Caramelized Onion Sauce - cooking recipe

Ingredients

3 lbs onions, sliced thin
1/4 cup olive oil
1/4 cup butter
1 teaspoon sugar
2 tablespoons white wine vinegar
3/4 cup dry white wine
1 cup chicken broth
1 1/2 cups grated gruyere cheese
1/2 cup minced fresh parsley leaves
1 lb your favorite pasta, cooked al dente

Preparation

Cook onions in oil and butter, covered, over moderately-low heat, stirring occasionally, for 45 minutes.
Add sugar and vinegar and cook, uncovered, over moderately-high heat, stirring, for 15-20 minutes, or until onions are golden.
Stir in wine, broth and 1 cup water, bring to a boil and simmer for 5 minutes.
Add cheese, stirring, until it is melted.
Stir in parsley and season to taste and serve immediately.
Enough for 1 lb pasta.
Fusilli is good.