Heat the oil in a 1 2-inch skillet over medium-high heat until it immediately bubbles when an onion touches it, about 1 minute. Add the onions, sprinkle with the salt, and cook, stirring ...

The sweet, roasted flavor of caramelized onions is central to many recipes, from a French onion grilled cheese sandwich to steak with onions and peppers. Caramelization takes time and attention ...