Ingredients
Method
- Preheat oven to 350°F (175°C).
- Toss potatoes and onion in a bowl.
- Whisk butter and flour in a saucepan. Gradually whisk in milk until smooth and slightly thickened.
- Stir in salt, pepper, and nutmeg (if using).
- Layer half of the potato and onion mixture in a greased baking dish.
- Pour half of the milk mixture over the potatoes and onions.
- Repeat layers with remaining potatoes, onions, and milk mixture.
- Cover the baking dish with aluminum foil.
- Bake for 1 hour.
- Remove foil and bake for 30-45 minutes, until potatoes are tender and top is golden brown.
- Let stand for 10 minutes before serving.
Notes
For a richer flavor, use heavy cream instead of milk. You can also add a clove of minced garlic to the milk mixture for extra flavor.
