Braised Onion Sauce - cooking recipe

Ingredients

1/2 lb. unsalted butter
1 1/2 lb. onions, peeled and sliced (about 6 medium onions)
1 Tbsp. sugar
1/4 c. Madeira wine
grated cheese
3/4 to 1 lb. pasta

Preparation

Melt butter.
Add onions and cook them over medium heat until they are soft and transparent.
Stir in the sugar; reduce the heat and cook, very slowly for about 1 hour.
Stir in the wine; cook briefly and pour over cooked pasta.
Sprinkle with grated cheese.