Au Gratin Potatoes Classic (Printable)

Tender potatoes baked with creamy garlic sauce and melted cheese for a comforting side dish.

# What You'll Need:

→ Vegetables

01 - 3 lbs Yukon Gold or Russet potatoes, peeled and thinly sliced
02 - 2 cloves garlic, minced

→ Dairy

03 - 4 tbsp unsalted butter
04 - 2 cups heavy cream
05 - 2 cups grated Gruyère cheese
06 - ½ cup grated Parmesan cheese

→ Spices & Seasonings

07 - 1 tsp salt
08 - ½ tsp freshly ground black pepper
09 - ¼ tsp freshly grated nutmeg (optional)

# Directions:

01 - Preheat oven to 375°F. Grease a 9x13 inch baking dish with butter.
02 - Melt butter in a saucepan over medium heat. Add minced garlic and sauté for 1 minute until fragrant.
03 - Stir in heavy cream, salt, pepper, and nutmeg. Heat until just simmering, then remove from heat.
04 - Arrange half of the sliced potatoes in the prepared dish. Pour over half of the cream mixture. Sprinkle with half the Gruyère and Parmesan cheeses.
05 - Layer remaining potatoes, pour over remaining cream mixture, and sprinkle with remaining cheeses.
06 - Cover dish with foil and bake for 40 minutes.
07 - Remove foil and bake for an additional 20 minutes, until top is golden and potatoes are tender.
08 - Let rest for 10 minutes before serving.

# Expert Advice:

01 -
  • It looks like you spent hours in the kitchen, but most of the work happens while the oven does the heavy lifting.
  • The crispy cheese top gives way to creamy, tender potatoes underneath, and somehow it feels fancy enough for guests but honest enough for family.
  • You can have it ready to go into the oven before your guests even arrive.
02 -
  • Slice your potatoes consistently, or the thick ones will still be raw when the thin ones are mushy; a mandoline makes this foolproof if you have one.
  • Don't skip the resting time at the end—those 10 minutes matter more than you'd think for structure and temperature.
03 -
  • Make it the morning of serving and refrigerate unbaked; it actually cooks more evenly and comes out more tender when it starts cold.
  • The sound of quiet contentment around the table is your real indication that you nailed it.
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