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Roasted Garlic Potatoes Au Gratin – Creamy & Easy


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  • Author: Olivia
  • Total Time: 1 hour 40 minutes
  • Yield: 6–8 servings
  • Diet: Vegetarian

Description

Roasted Garlic Potatoes Au Gratin is a creamy, cheesy side dish made with thinly sliced potatoes layered in a roasted garlic-infused cream sauce and topped with golden melted cheese. Comforting, flavorful, and perfect for both family dinners and special occasions.


Ingredients

  • 89 medium starchy potatoes (about 1.2 kg), thinly sliced
  • 1 large head garlic, top cut off
  • 1 cup heavy cream or double cream
  • 1/4 cup whole milk
  • 1 tablespoon unsalted butter, plus more for greasing the dish
  • 1 teaspoon fresh thyme leaves or 1/3 teaspoon dried thyme
  • 1/4 teaspoon nutmeg
  • 1/2 cup grated parmesan cheese, divided
  • 2 cups shredded Gruyère or mozzarella cheese
  • Salt and pepper to taste
  • Fresh chives for garnish

Instructions

  1. Preheat oven to 400°F (200°C). Wrap the garlic head in foil and roast for 30–40 minutes until soft. Let cool, then squeeze and mash the cloves into a paste.
  2. While garlic roasts, thinly slice the potatoes evenly.
  3. In a saucepan, melt butter over medium heat. Stir in garlic paste, cream, milk, thyme, nutmeg, salt, and pepper. Simmer for a few minutes until slightly thickened.
  4. Reduce oven temperature to 375°F (190°C) and grease a baking dish with butter.
  5. Layer sliced potatoes in the dish, sprinkling with cheese and seasoning lightly between layers. Finish with a layer of potatoes on top.
  6. Pour warm cream sauce evenly over the potatoes. Press gently to distribute the sauce.
  7. Cover with foil and bake for 45 minutes.
  8. Remove foil, sprinkle remaining parmesan on top, and bake uncovered for 20–30 minutes, until the top is golden and bubbly.
  9. Let rest 10–15 minutes before serving. Garnish with chopped chives.

Notes

  • Swap Gruyère with sharp cheddar for a bolder flavor.
  • Add sliced onions or leeks between layers for sweetness.
  • Mix in fresh rosemary or parsley for an herbier twist.
  • Use Yukon Gold or Russet potatoes for best results.
  • Prep Time: 25 minutes
  • Cook Time: 75 minutes
  • Category: Side Dish
  • Method: Baking
  • Cuisine: French

Nutrition

  • Serving Size: 1 portion
  • Calories: 330
  • Sugar: 2g
  • Sodium: 320mg
  • Fat: 22g
  • Saturated Fat: 13g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 24g
  • Fiber: 2g
  • Protein: 10g
  • Cholesterol: 60mg