Prep 10 min
Cook 30 min
3 tablespoons butter
2 tablespoons extra-virgin olive oil (EVOO)
2-1/2 pounds onions, thinly sliced
Salt and pepper
2 teaspoons sugar
In a large skillet, melt the butter in the olive oil over medium-high heat. Add the onions and 1/4 teaspoon each salt and pepper, and cook, stirring constantly, until the onions begin to soften, about 5 minutes.
Stir in the sugar and cook, scraping the browned bits off the bottom of the pan frequently, until the onions are golden brown, about 20 minutes.