Step 1

Preheat the oven to 375°F.

Step 2

Prepare a gratin dish or a shallow oven-proof baking dish with butter or use non-stick spray, reserve.

Step 3

Rinse the potatoes under cold running water and slice them 1/8-inch thick. Place them in a large bowl, add the cream, chopped rosemary, lemon zest, cheese, salt and pepper. Toss to combine and transfer the mixture into the prepared gratin or baking dish. Transfer the dish to the oven and bake for 45 minutes or until bubbly and golden on top. Remove and serve immediately with the chives sprinkled on top as a garnishment.