Au Gratin Potatoes

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  • Prep Time

    20 mins

  • Cook Time

    1 hr 20 mins

  • Total Time

    1 hr 25 mins

  • Servings

    6 people

  • Calories

    703 kcal

  • Course

    Side Dish

  • Cuisine

    American

Au Gratin Potatoes

Thinly sliced potatoes and onions are topped with a creamy and decadent cheese sauce in this Au Gratin Potatoes recipe. A combination of Gruyère and cheddar cheese adds the most incredible flavor.

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Ingredients

Servings
  • 4 large russet potatoes peeled and thinly sliced
  • 1 large yellow onion thinly sliced
  • 3 Tablespoons butter
  • 3 Tablespoons all-purpose flour
  • 2 cups heavy cream
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon garlic powder
  • 1 1/2 cups shredded cheddar cheese
  • 1 1/2 cups shredded gruyere cheese divided
  • fresh parsley or chives chopped, for garnish

Instructions

  1. Preheat your oven to 375°F (190°C). In a medium saucepan, melt 3 tablespoons of butter over medium heat, then add 3 tablespoons of flour, whisking continuously for 1 minute until smooth and bubbly. Gradually whisk in 2 cups of heavy cream and cook, stirring constantly, until it thickens and bubbles, about 5-7 minutes.
  2. Stir in 1 teaspoon of salt, 1/2 teaspoon of black pepper, and 1/2 teaspoon of garlic powder. Reduce heat to low and add 1 1/2 cups of shredded cheddar cheese and 1 cup of shredded Gruyère cheese, stirring until melted and smooth.
  3. Grease a 9x13 inch baking dish with butter or cooking spray. Arrange the thinly sliced potatoes in overlapping rows at the bottom, then evenly distribute the yellow onions over the potatoes. Pour the cheese sauce evenly over the arranged potatoes and onions, ensuring full coverage. Sprinkle the remaining 1/2 cup of shredded Gruyère cheese over the top.
  4. Cover the dish with aluminum foil and bake for 40 minutes. Remove the foil and bake for an additional 20-25 minutes, or until the top is golden brown and the potatoes are tender. Once baked, let it cool for a few minutes, then garnish with freshly chopped parsley or chives before serving. Enjoy!

Nutrition Information

Show Details
Calories 703kcal (35%) Carbohydrates 33g (11%) Protein 22g (44%) Fat 55g (85%) Saturated Fat 34g (170%) Polyunsaturated Fat 2g Monounsaturated Fat 14g Trans Fat 0.2g Cholesterol 169mg (56%) Sodium 884mg (37%) Potassium 759mg (22%) Fiber 4g (16%) Sugar 4g (8%) Vitamin A 1941IU (39%) Vitamin C 30mg (33%) Calcium 610mg (61%) Iron 2mg (11%)

Nutrition Facts

Serving: 6people

Amount Per Serving

Calories 703 kcal

% Daily Value*

Calories 703kcal 35%
Carbohydrates 33g 11%
Protein 22g 44%
Fat 55g 85%
Saturated Fat 34g 170%
Polyunsaturated Fat 2g 12%
Monounsaturated Fat 14g 70%
Trans Fat 0.2g 10%
Cholesterol 169mg 56%
Sodium 884mg 37%
Potassium 759mg 16%
Fiber 4g 16%
Sugar 4g 8%
Vitamin A 1941IU 39%
Vitamin C 30mg 33%
Calcium 610mg 61%
Iron 2mg 11%

* Percent Daily Values are based on a 2,000 calorie diet.

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