Move over plain potato side dish and serve this delicious Mashed Potato Gratin! Creamy potatoes, mixed with cheese, and topped with a crispy, buttery panko topping.
This creamy and fluffy Mashed Potato Gratin is perfect for using up leftover mashed potatoes, or make fresh, and is an elegant side dish for any occasion!
Heat oven to 375F. Peel and dice the potatoes. Place in a large pot and cover with cold water. Add 2 teaspoons salt. Bring to boil over high heat and cook until the potatoes are fork tender. Drain and return potatoes to the pot.