French Onion Potato Gratin

Potatoes Au Gratin Recipes

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Prep Time:
30 mins

Cook Time:
1 hr 30 mins

Stand Time:
15 mins

Total Time:
2 hrs 15 mins

Servings:
12

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Ingredients

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2x

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Original recipe (1X) yields 12 servings

  • 1 tablespoon butter, plus more for greasing

  • 1 tablespoon olive oil

  • 2 sweet onions, peeled and cut into thin wedges

  • 3 cloves garlic, minced

  • 1 1/4 teaspoons salt

  • 1/2 teaspoon freshly ground black pepper

  • 1 1/2 cups whipping cream

  • 1/2 cup milk

  • 1 tablespoon snipped fresh thyme

  • 3 pounds yukon gold potatoes, thinly sliced

  • 2 1/2 cups shredded Gruyere cheese, divided

  • 1 cup French fried onions

  • 2 cups garlic and herb croutons, coarsely crushed

Directions

  • Gather all ingredients.

    Jason Donnelly / Food Styling: Holly Dreesman / Prop Styling: Natalie Ghazali


  • Lightly grease a 3-quart rectangular or oval baking dish. 


  • Heat butter and olive oil in a large skillet over medium heat. Stir in onion wedges. Cook, covered, until onions are tender, stirring occasionally, about 20 minutes. (If necessary, reduce heat to medium-low to prevent overbrowning before onions are tender.) Increase heat to medium-high and cook, uncovered, until onions are golden, stirring frequently, about 5 minutes more. Add garlic and cook 30 seconds more. Remove from heat and season with 1/4 teaspoon each salt and pepper. Set aside.

    Jason Donnelly / Food Styling: Holly Dreesman / Prop Styling: Natalie Ghazali


  • Preheat the oven to 350 degrees F (180 degrees C).


  • Stir together whipping cream, milk, thyme, remaining 1 teaspoon salt, and 1/4 teaspoon pepper; in a bowl; set aside.

    Jason Donnelly / Food Styling: Holly Dreesman / Prop Styling: Natalie Ghazali


  • Arrange half of the potatoes in the prepared dish, overlapping as necessary. Sprinkle with caramelized onions. Sprinkle with 1 cup Gruyere cheese. Layer remaining potatoes over cheese. Pour cream mixture over potatoes and top with 1 cup Gruyere cheese.

    Jason Donnelly / Food Styling: Holly Dreesman / Prop Styling: Natalie Ghazali


  • Bake in the preheated oven for 50 minutes.

    Jason Donnelly / Food Styling: Holly Dreesman / Prop Styling: Natalie Ghazali


  • Top with French friend onions, crushed croutons, and remaining 1/2 cup cheese. Bake until potatoes are tender and cheese is melted, 10 to 15 minutes more. Let stand for 15 minutes before serving.

    Jason Donnelly / Food Styling: Holly Dreesman / Prop Styling: Natalie Ghazali

  • I Made It

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    Nutrition Facts (per serving)

    404
    Calories

    24g
    Fat

    37g
    Carbs

    13g
    Protein

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    Nutrition Facts

    Servings Per Recipe
    12

    Calories
    404

    % Daily Value *

    Total Fat
    24g

    30%

    Saturated Fat
    13g

    64%

    Cholesterol
    63mg

    21%

    Sodium
    555mg

    24%

    Total Carbohydrate
    37g

    13%

    Dietary Fiber
    4g

    13%

    Total Sugars
    6g

    Protein
    13g

    25%

    Vitamin C
    14mg

    15%

    Calcium
    309mg

    24%

    Iron
    2mg

    10%

    Potassium
    748mg

    16%

    * Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

    ** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

    (-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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