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Cheesy potatoes au gratin
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Cheesy Potatoes au Gratin

Cheesy Potatoes au Gratin is the ultimate comfort. Tender, thinly sliced potatoes layered with rich, melty cheese and infused with fragrant herbs—it's a dish that's as delicious as it is impressive.
Prep Time10 minutes
Cook Time1 hour 10 minutes
Total Time1 hour 20 minutes
Course: Side Dish
Cuisine: American
Keyword: Cheese, Potatoes
Servings: 4 Servings
Calories: 314kcal
Author: Laura Lynch

Ingredients

  • 1 tablespoon olive oil
  • 3 medium Yukon gold potatoes
  • 1/2 teaspoon kosher salt
  • 1/4 teaspoon ground black pepper
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon dried thyme
  • 1/4 teaspoon ground sage
  • 1/4 teaspoon dried rosemary
  • 1 cup Gruyère or sharp cheddar grated
  • 1/4 cup thinly sliced yellow onion chopped
  • 3 tablespoons heavy cream
  • 3 tablespoons low-sodium chicken broth
US Customary - Metric

Instructions

  • Heat oven to 375°F(190C). Brush inside of a 6” cast-iron skillet, or similar, with olive oil and set aside.
  • Slice the potatoes thinly with a knife or on a mandolin.
  • Add the potatoes and all of the seasonings to a bowl and stir to mix everything well. Then add most of the cheese and onion to the bowl and toss it all together.
  • Grab a handful of potatoes and line them up around the skillet until everything is nestled in. Sprinkle with remaining cheese. Pour cream and broth over potatoes. Cover with foil.
  • Bake for 50 minutes and remove foil. Continue to bake until potatoes are tender and top is golden, 15-20 minutes more. Check the potatoes to make sure they are tender in the middle. They might take longer to cook, depending on thickness.

Notes

  • Uniform potato slices are crucial for even cooking. If you have a mandolin, now's the time to use it! It ensures that all your potato slices are the same thickness, which helps them cook evenly and creates that perfect, tender texture.
  • Potatoes are like sponges—they absorb the flavors you add to them. Be sure to mix the potatoes well with the seasonings, cheese, and onion before arranging them in the skillet. This ensures every bite is packed with flavor.
  • Oven temperatures can vary, so it’s important to check the potatoes for doneness before serving. After the initial 50 minutes of baking, poke the center with a knife or fork. If the potatoes feel tender all the way through, they’re ready. If not, give them a bit more time until they’re just right.

Nutrition

Calories: 314kcal | Carbohydrates: 30g | Protein: 11g | Fat: 17g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Cholesterol: 41mg | Sodium: 492mg | Potassium: 734mg | Fiber: 4g | Sugar: 2g | Vitamin A: 455IU | Vitamin C: 32mg | Calcium: 231mg | Iron: 1mg