
For the Caramelized Onions
2 large yellow onions, halved and thinly sliced (about 5–6 cups sliced)
2 tbsp unsalted butter
1 tbsp olive oil
1 tsp kosher salt, divided (½ at the start, ½ later)

For the Caramelized Onions
2 large yellow onions, halved and thinly sliced (about 5–6 cups sliced)
2 tbsp unsalted butter
1 tbsp olive oil
1 tsp kosher salt, divided (½ at the start, ½ later)