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Creamy Potato Gratin Bake: The EASIEST Cheesy Au Gratin


  • Total Time: 1 hour 10 minutes
  • Yield: 8 servings 1x

Description

This Creamy Potato Gratin Bake recipe transforms humble potatoes into a decadent side dish, perfect for weeknight dinners or holiday gatherings. Tender potatoes are layered in a rich, cheesy sauce and baked to golden perfection.


Ingredients

Scale
  • 2 pounds Yukon Gold potatoes, peeled and thinly sliced (about 1/8 inch thick)
  • 4 tablespoons unsalted butter
  • 2 tablespoons all purpose flour
  • 3 cups whole milk
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon ground nutmeg
  • 1 cup heavy cream
  • 2 cups shredded Gruyere cheese, divided
  • 1/2 cup grated Parmesan cheese

Instructions

  1. Preheat the oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish.
  2. In a saucepan, melt the butter over medium heat. Whisk in the flour and cook for 1 minute, creating a roux.
  3. Gradually whisk in the milk until smooth. Bring to a simmer, stirring constantly.
  4. Reduce heat and simmer for 5 minutes, or until the sauce has thickened slightly, stirring frequently.
  5. Remove from heat and stir in the salt, pepper, and nutmeg. Stir in the heavy cream and 1 1/2 cups of the Gruyere cheese.
  6. Arrange one third of the potato slices in the prepared baking dish, overlapping slightly.
  7. Pour one third of the cream mixture over the potatoes.
  8. Repeat layers twice more, ending with the remaining cream mixture on top.
  9. Sprinkle the remaining 1/2 cup Gruyere cheese and the Parmesan cheese over the gratin.
  10. Bake for 50 60 minutes, or until the potatoes are tender and the top is golden brown and bubbly. A knife should easily pierce the potatoes.
  11. Let the gratin rest for 10 minutes before serving.
  • Prep Time: 15 minutes
  • Cook Time: 55 minutes
  • Category: Side Dish
  • Cuisine: American

Nutrition

  • Calories: 350
  • Sugar: 5g
  • Sodium: 250mg
  • Fat: 25g
  • Saturated Fat: 15g
  • Carbohydrates: 25g
  • Fiber: 3g
  • Protein: 10g
  • Cholesterol: 75mg

Keywords: potato gratin, au gratin potatoes, cheesy potatoes, side dish, creamy potatoes