Watch Chef John make his secret potato and parsnip gratin recipe. Parsnips have a wonderful flavor and texture. And when combined with the all-American potato, parsnips are even better. This beautiful gratin casserole features a little garlic, some butter, and layers of potatoes and parsnips, plus thyme, Parmesan cheese, and crème fraiche (or heavy cream). Top it with a little chicken broth and a dusting of Parmesan, then bake it in the oven to bubbly and beautiful. Watch the video, then get the recipe for Chef John’s Potato and Parsnip Gratin. It’s the ideal winter side dish, but honestly it’s amazing all year long. Try it as a breakfast potato treat, too, with some eggs and bacon!