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Homemade Creamy Au Gratin Potatoes in a white casserole dish with parsley garnish.

Creamy Au Gratin Potatoes

Rich, creamy au gratin potatoes layered with cheese and baked until golden and bubbly. A crowd-pleasing side dish perfect for holidays, potlucks, or family dinners.
5 from 1 vote
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Course: Side Dish
Cuisine: American, French-Inspired
Keyword: Au gratin potatoes with heavy cream, Au gratin potatoes with milk, Creamy Au Gratin Potatoes, Gratin dauphinois recette traditionnelle, Potatoes au gratin, Scalloped potatoes, Simple au gratin potatoes, Simple cheese sauce for au gratin potatoes
Prep Time: 20 minutes
Cook Time: 1 hour 5 minutes
Resting Time: 10 minutes
Total Time: 1 hour 35 minutes
Servings: 11
Calories: 370kcal
Cost: $14

Equipment

  • 1 9x13 baking dish (Buttered well)
  • 1 Large saucepan (For sauce)
  • 1 Sharp knife (Or mandoline for slicing potatoes)
  • 1 Cutting board (For potato prep)
  • 1 Whisk (For smooth sauce)
  • 1 Cheese grater (For freshly grated cheeses)

Ingredients

  • 3 lbs Russet or Yukon Gold potatoes - Peeled, sliced ⅛-inch thick
  • 2 teaspoon Salt - Divided, for seasoning
  • 1 teaspoon Black pepper - Freshly ground
  • 1 teaspoon Fresh thyme or rosemary - Optional
  • 3 tablespoon Butter - Unsalted
  • 3 tablespoon All-purpose flour - For roux
  • 3 cups Heavy cream
  • 1 cup Whole milk
  • 2 cloves Garlic - Minced
  • Pinch Fresh nutmeg - Optional
  • 1 ½ cups Gruyère cheese - Grated
  • 1 ½ cups Sharp cheddar cheese - Grated
  • ½ cup Parmesan cheese - Grated
  • 4 oz Cream cheese - Softened

Instructions

  • Preheat oven to 375°F. Butter a 9x13 dish. Peel and slice potatoes (⅛-inch). Rinse in cold water, pat dry, season with salt & pepper.
  • Melt butter in saucepan, add garlic. Stir in flour; cook 1 min. Slowly whisk in cream and milk. Simmer 5 min until thickened.
  • Stir in Gruyère, cheddar, Parmesan, and cream cheese (reserve some for topping). Season with nutmeg, salt, and pepper.
  • Arrange potatoes in layers with sauce in between. Finish with remaining sauce and reserved cheese on top.
  • Cover with foil and bake 45 minutes. Uncover and bake 20–30 minutes until golden and bubbly. Rest 10 minutes before serving.

Notes

Nutrition information is automatically calculated and should be considered an approximation. Actual values may vary based on specific ingredients used and portion sizes.Feel free to add more of your favorite toppings.

Nutrition

Serving: 200g | Calories: 370kcal | Carbohydrates: 28g | Protein: 11g | Fat: 24g | Saturated Fat: 14g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Cholesterol: 75mg