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Rich Creamy Baked Potato Gratin

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This rich and creamy baked potato gratin is the ultimate comfort food. Layered with tender russet potatoes, infused with garlic and nutmeg, and smothered in a luxurious blend of cream, Gruyère, and Parmesan, it delivers indulgent flavor in every bite.

Ingredients

  • Russet potatoes
  • Heavy cream
  • Whole milk
  • Garlic
  • Salt
  • Ground black pepper
  • Nutmeg
  • Gruyère cheese
  • Parmesan cheese
  • Unsalted butter
  • Fresh thyme

Instructions

  1. Preheat oven to 375°F (190°C).
  2. Butter a 9×13-inch baking dish.
  3. In a saucepan, warm heavy cream, milk, garlic, salt, black pepper, and nutmeg until just below a boil.
  4. Layer half of the sliced potatoes in the dish, pour over half the cream mixture, and top with half the cheeses.
  5. Repeat with remaining potatoes, cream, and cheeses.
  6. Cover with foil and bake for 45 minutes.
  7. Uncover and bake for another 15 minutes until golden and bubbly.
  8. Let rest for 10 minutes, then garnish with fresh thyme and serve.

Notes

  • Use a mandoline for even potato slices (~1/8 inch thick).
  • Add caramelized onions or smoked paprika for extra flavor.
  • Can be assembled ahead and baked the next day (add 10 minutes to bake time if cold).
  • Store leftovers in the fridge for up to 3 days or freeze individual portions for up to 2 months.
  • Reheat in the oven; avoid microwaving to preserve texture.

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