Ingredients

6 large onions, thinly sliced:
These are the star of the dish, transforming from sharp and pungent to sweet and mellow during the slow cooking process.
4 tablespoons butter:
Adds richness and helps the onions caramelize perfectly.
2 tablespoons olive oil:
Olive oil complements the butter, ensuring the onions don’t stick and adding a subtle flavor.
1 teaspoon salt:
Enhances the natural sweetness of the onions as they cook.
1 teaspoon sugar:
Helps speed up the caramelization process.
1 pound pasta of your choice:
The pasta becomes the perfect canvas for the caramelized onions, whether you like spaghetti, fettuccine, or penne.
1/2 cup grated Parmesan cheese:
Provides a savory, nutty taste that contrasts with the sweet onions.
Freshly ground black pepper, to taste:
A pinch of pepper gives just enough heat without overpowering the dish.
Fresh parsley, chopped (optional):
Adds color and a fresh herbaceous note to the dish.