Ingredients
Method
Preparation
- Preheat the oven to 375°F (190°C).
- Peel the potatoes and slice them about 1/8 inch thick. Place slices in a large bowl of cold water to remove excess starch and keep them from browning.
- In a bowl, whisk the heavy cream with garlic powder, salt, black pepper, and nutmeg until smooth and combined.
- Grease a 9×13-inch baking dish with the unsalted butter.
Layering and Baking
- Arrange half of the potato slices in a single even layer in the dish. Scatter half of the onion over the potatoes. Pour half of the cream mixture evenly over the layer. Sprinkle half of the shredded cheddar cheese over the top.
- Repeat with the remaining potato slices, onion, cream mixture, and cheddar cheese. If using Parmesan cheese, sprinkle it on top.
- Cover the dish tightly with aluminum foil and bake for 45 minutes.
- Remove the foil and bake uncovered for an additional 30 to 35 minutes, until the top is golden brown and potatoes are tender when pierced with a fork.
- Let the casserole rest for 10 minutes before serving.
Nutrition
Notes
Store leftovers in an airtight container in the refrigerator for 3 to 4 days. To reheat, add a splash of cream or milk and bake at 350°F until heated through.
