Caramelized Onion and Potato Gratin
We wanted to dress up our trusty potato gratin with sweet caramelized onions. But dealing with those onions led to tears of frustration.
WHY THIS RECIPE WORKS
To ensure that the potato slices for our Caramelized Onion and Potato Gratin were all the same thickness, we used a mandoline instead of slicing them by hand. We caramelized the onions in a third of the time by adding brown sugar and cookin...