The Provençal version of this gratin calls for a French pumpkin called potiron, but a combination of acorn and butternut squash will make a good substitute.
Comte or Emmentaler cheese, celeriac (also known as celery root), and tomatoes are combined with sliced potatoes and creme fraiche for this sumptuous gratin. This recipe is an adaptation of one in Patricia Wells’s cookbook Bistro Cooking (Ted Smart, 1999). See the recipe for Potato-Celeriac Gratin »
Don’t limit traditional pie spices—clove, cinnamon, and nutmeg—to the dessert table. In this cheesy, rich gratin, the spices take a savory note alongside kale, sweet potatoes, and sharp white cheddar.
