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A spoonful of au gratin potatoes being scooped out of a white casserole dish.
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5 from 1 vote

Au Gratin Potatoes

Au Gratin Potatoes are cheesy, creamy side dish perfection everyone is sure love. Tender sliced potatoes smothered in a luscious cream sauce made with two kinds of cheese and baked until golden and bubbly!
Author: Nikki Lee
Servings: 8
Prep Time 15 minutes
Cook Time 1 hour 15 minutes
Total Time 1 hour 30 minutes

Ingredients

  • 2.5 pounds russet potatoes (starchy potatoes) sliced thinly (about ⅛ inch thick) into rounds
  • 1 ½ cups shredded sharp cheddar cheese divided (reserving 1 cup for top)
  • 1 ½ cups shredded Gruyere cheese
  • 1 ½ cups heavy cream
  • ½ cup milk
  • 1 ½ tablespoons flour
  • 2 cloves garlic minced
  • ¼ teaspoon salt
  • ⅛ teaspoon black pepper
  • 2 teaspoons thyme leaves optional
  • butter for baking dish about 1 tablespoon
  • fresh chopped parsley to garnish

Instructions

  • Preheat the oven to 375°F and butter a 2.5 to a 3-quart baking dish or cast iron skillet.
  • Wash and thinly slice Potatoes with a knife or mandoline slicer. Place sliced potatoes fanned out in rows (slanted rows) in the bottom of the casserole or baking dish.
  • In a medium bowl mix together the cheeses. Reserve ¾ cup for the top.
  • Melt butter in a saucepan or skillet over medium heat, slowly whisk in flour and cook for 2 to 3 minutes. Slowly whisk in heavy cream, milk, garlic, salt, pepper, and thyme leaves (optional). Heat until thick and bubbly. Remove from heat and stir in 1 ¾ cups cheese mixture until melted and creamy.
  • Spoon or pour cheese sauce over the potatoes. Spray the inside of aluminum foil and cover the baking dish. Bake for 60 to 70 minutes or until potatoes are tender. (Test with a knife to fork tender)
  • Remove cover and top with remaining cheese. Then bake uncovered for 15 to 20 minutes until the cheese is golden and bubbly.
  • Let stand for 5 to 10 minutes before serving
  • Garnish with thyme leaves or parsley and serve.

Nutrition

Serving: 11 serving | Calories: 344kcal | Carbohydrates: 18g | Protein: 10g | Fat: 26g | Saturated Fat: 16g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Cholesterol: 81mg | Sodium: 279mg | Potassium: 422mg | Fiber: 1g | Sugar: 3g | Vitamin A: 965IU | Vitamin C: 5mg | Calcium: 259mg | Iron: 1mg

Find it online:

www.soulfullymade.com/au-gratin-potatoes/