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Potatoes Au Gratin

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A rich, creamy, and cheesy potato side dish baked until golden and bubbly. Thinly sliced potatoes are layered upright in cream, garlic, cheddar, and Parmesan for the perfect balance of tender insides and crispy edges.

  • Total Time: 1 hour 30 minutes
  • Yield: 8 servings

Ingredients

  • 4 tablespoons unsalted butter, softened and divided
  • 3 pounds russet potatoes, peeled (about 45 medium)
  • 1 cup heavy cream
  • 1/2 cup shredded white cheddar cheese
  • 6 tablespoons grated Parmesan cheese, divided
  • 3 garlic cloves, minced
  • Salt and pepper, to taste

Instructions

  1. Preheat oven to 375˚F (190˚C). Grease a baking dish with 2 tablespoons of butter.
  2. Thinly slice potatoes into 1/8-inch slices using a mandoline.
  3. In a mixing bowl, combine heavy cream, white cheddar, 4 tablespoons Parmesan, and garlic. Season with salt and pepper.
  4. Toss potato slices in the cream mixture until evenly coated.
  5. Arrange coated potato slices vertically in the prepared baking dish. Pour any remaining cream mixture over the top and season lightly with salt and pepper.
  6. Dot the top with remaining 2 tablespoons butter.
  7. Cover with foil and bake 35–40 minutes.
  8. Uncover, sprinkle with remaining Parmesan, and bake an additional 25–30 minutes until potatoes are tender.
  9. Broil for 1 minute until golden brown. Let cool 10 minutes before serving.

Notes

  • Swap cheddar with Gruyère, Fontina, or Comté for a nutty flavor.
  • Roast garlic beforehand for a deeper flavor.
  • Use whole milk instead of cream for a lighter dish.
  • Add fresh herbs like thyme, rosemary, or chives for freshness.
  • Store leftovers in the fridge up to 4 days; reheat covered in the oven at 350˚F.
  • Author: Amelia
  • Prep Time: 20 minutes
  • Cook Time: 1 hour 10 minutes
  • Category: Side Dish
  • Method: Baking
  • Cuisine: French
  • Diet: Vegetarian

Nutrition

  • Serving Size: 1 portion (1/8 of recipe)
  • Calories: 285
  • Sugar: 2g
  • Sodium: 290mg
  • Fat: 16g
  • Saturated Fat: 10g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 3g
  • Protein: 7g
  • Cholesterol: 45mg