How to Make Creamy Scalloped Potatoes (Au Gratin)

Introduction

While mashed potatoes rule Thanksgiving, Christmas calls for something richer. These scalloped potatoes feature thinly sliced spuds bathed in a velvety, garlic-infused cheese sauce and baked until bubbling and golden. It’s glorious, cheesy comfort food at its finest.

Why You’ll Love This Recipe

  • Rich & Decadent: Heavy cream and two types of cheese make this incredibly luxurious.
  • Garlic Infused: Simmering the garlic in the cream infuses flavor into every bite.
  • Golden Cheesy Crust: The top layer gets perfectly crispy and browned.
  • Perfect Make-Ahead: Assembles easily and reheats beautifully.
  • Elegant Side: Looks beautiful in a casserole dish on the holiday table.

Ingredients

  • 4 lbs Yukon Gold potatoes, peeled and sliced 1/8-inch thick
  • 2 cups heavy cream
  • 1 cup whole milk
  • 4 cloves garlic, minced
  • 2 cups Gruyère cheese, shredded
  • 1 cup Parmesan cheese, grated
  • 1 teaspoon fresh thyme
  • Salt and pepper

Instructions

  1. Preheat oven to 400°F (200°C). Grease a 9×13 baking dish.
  2. Simmer cream, milk, garlic, and thyme in a saucepan. Remove from heat.
  3. Layer 1/3 of the potatoes in the dish. Season with salt/pepper. Sprinkle with 1/3 of the cheeses.
  4. Repeat layers twice more.
  5. Pour the warm cream mixture over the entire dish.
  6. Cover with foil and bake for 40 minutes.
  7. Remove foil and bake for another 20-30 minutes until potatoes are tender and top is golden brown and bubbly.
  8. Let stand 15 minutes before serving to set the sauce.

Tips

Use a mandoline slicer to get the potatoes perfectly thin and even. This ensures they cook at the same rate. Gruyère is the traditional cheese for its nutty flavor and melting quality.

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