Gratin Dauphinois

Directions

1. 1
   Preheat oven to 350 degrees Fahrenheit.
2. 2
   Rub a 12-inch gratin dish or a shallow 3-quart baking dish with the garlic.
3. 3
   Let dry, then coat with the softened butter.
4. 4
   In a large saucepan or dutch oven, combine the potatoes, half and half, milk, salt, pepper, and nutmeg.
5. 5
   Bring the mixture to a gentle boil over medium heat, then cook and stir until the liquid thickens slightly, about 5 minutes.
6. 6
   Pour the mixture into the prepared dish; press down on the top layer to submerge the potatoes.
7. 7
   Sprinkle the top with the grated Gruyere cheese.
8. 8
   Bake until the top is golden and the potatoes are tender, about 45 minutes to an hour.