THERE’S MUCH to love about earthy potatoes braised in savory broth with caramelized onions until they’re creamy and saturated with glossy, reduced liquid. Add a crispy, cheesy topping and the potatoes go from very good to unforgettable.
To make the dish, cook sliced onions in a covered pot with butter and a little water for about 15 minutes. The steam causes the onions
