INGREDIENTS
2 lb
onions (7–8 small ones), very thinly sliced
3 tbsp
extra-virgin olive oil, plus more for drizzling
Kosher salt
6
garlic cloves, sliced
1/2 cup
dry white wine
4
thick slices sourdough bread
2 oz
sharp cheddar cheese, shredded
Sliced chives and finely ground black pepper (for serving)