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Creamy Scalloped Potatoes Au Gratin Recipe with Crispy Golden Cheese Crust

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A comforting and creamy scalloped potatoes au gratin dish featuring tender Yukon Gold potato slices layered in a rich cheese sauce and topped with a crispy golden cheese crust.

Ingredients

Scale
  • 3 pounds Yukon Gold potatoes, peeled and thinly sliced
  • 4 tablespoons unsalted butter, softened
  • 3 tablespoons all-purpose flour
  • 2 cups whole milk
  • 2 cloves garlic, minced
  • 1 cup Gruyère cheese, grated
  • 1 cup sharp cheddar cheese, grated
  • 1 teaspoon salt
  • ½ teaspoon freshly ground black pepper
  • Pinch of freshly grated nutmeg (optional)
  • 1 teaspoon fresh thyme leaves, chopped (optional)

Instructions

  1. Preheat the oven to 350°F (175°C).
  2. Peel and slice Yukon Gold potatoes into 1/8-inch (3 mm) thick rounds using a mandoline or sharp knife. Place them in a large bowl.
  3. In a medium saucepan, melt 4 tablespoons of butter over medium heat. Add minced garlic and cook for about 1 minute until fragrant but not browned.
  4. Whisk in 3 tablespoons of all-purpose flour and stir continuously for 2 minutes to form a roux, keeping it pale golden.
  5. Slowly add 2 cups of whole milk while whisking constantly to prevent lumps. Cook for 5-7 minutes until the sauce thickens and coats the back of a spoon. Add more milk if too thick.
  6. Remove sauce from heat and stir in 1 teaspoon salt, ½ teaspoon black pepper, a pinch of nutmeg, and fresh thyme if using.
  7. Stir in half of the grated cheese (½ cup Gruyère and ½ cup cheddar) until melted and smooth.
  8. Layer the potatoes in a 9×13 inch baking dish: arrange a single layer of potato slices to cover the bottom, pour a third of the cheese sauce over them. Repeat layering two more times, ending with sauce on top.
  9. Top with the remaining 1 cup of cheese to form the golden crust.
  10. Cover the dish tightly with aluminum foil and bake for 50 minutes.
  11. Remove foil and bake uncovered for an additional 15-20 minutes until the cheese crust is golden brown.
  12. Let the dish rest for 10 minutes before serving.

Notes

Slice potatoes evenly for consistent cooking; use a mandoline if possible. Add milk slowly while whisking to avoid lumps in the sauce. Cover dish during initial baking to trap steam, then uncover to crisp the cheese crust. Freshly grated nutmeg adds warmth. Store peeled and sliced potatoes submerged in cold water if prepping ahead. Adjust baking time if potato slices are thicker.

Nutrition

Keywords: scalloped potatoes, au gratin, creamy potatoes, cheesy potatoes, comfort food, side dish, Yukon Gold potatoes, crispy cheese crust

Find it online: https://blixfood.com/creamy-scalloped-potatoes-au-gratin-recipe-with-crispy-golden-cheese-crust/