Au Gratin Mashed Potatoes

Directions

1. 1
   Thinly slice potatoes on a mandoline and place in a large pot with milk, cream, and salt. Heat mixture until it boils over medium-high; boil, stirring frequently to prevent scorching, until potatoes are tender and nearly all liquid evaporates, about 30 minutes. Crush potatoes with a masher to desired consistency.
2. 2
   Preheat broiler to high with rack 6 inches from element. Transfer mashed potatoes to a broiler-safe, 11/2-qt. bowl or dish.
3. 3
   Combine Parmesan, chives, and pepper; sprinkle over potatoes. Broil potatoes until Parmesan melts and browns, about 5 minutes.