Leek and Potato Gratin

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  • Prep Time

    15 mins

  • Cook Time

    15 mins

  • Total Time

    1 hr 10 mins

  • Servings

    6

  • Calories

    367 kcal

  • Course

    Side Dish

  • Cuisine

    French

Leek and Potato Gratin

This easy Leek and Potato Gratin Casserole recipe is perfect for any occasion. It's creamy, cheesy, and full of flavor and pairs well with any main dish.

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Ingredients

Servings
  • 2 leeks
  • 2 tablespoons butter or avocado oil
  • 6 Russet potatoes medium sized
  • 1 cup half and half
  • 3 cloves garlic pushed through a garlic press
  • ¼ teaspoon nutmeg
  • 1 teaspoon fresh thyme chopped, or ½ teaspoon dried thyme
  • 1 teaspoon salt
  • ¼ teaspoon black pepper
  • 1 cup gruyere cheese grated
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Instructions

  1. Preheat the oven to 400 F.
  2. Place the leeks on a cutting board and trim the root end and dark green leaves. Cut the remaining leeks lengthwise in half. Slice each piece into thin strips.
  3. Heat butter or oil in a medium skillet and over medium heat. Add leeks and cook stirring occasionally until the leeks soften, about 5-7 minutes.
  4. Peel the potatoes with a mandoline or knife, and cut them into ⅛ inch-thick slices.
  5. Grease an 8 x 6 baking dish and arrange sliced potatoes in a circular pattern in a dish, overlapping slightly. Spread half of the sauteed leeks evenly over the potatoes.
  6. Arrange another layer of the potatoes followed by the remaining leeks and all remaining potatoes.
  7. In a measuring cup whisk half and half, garlic, nutmeg, thyme, salt, and pepper. Pour it over the vegetables.
  8. Sprinkle with grated Gruyere cheese.
  9. Cover the gratin with a foil and bake for 40 minutes. Carefully remove the foil and bake for 10 more minutes until the gratin is golden brown.
  10. Remove from the oven and serve immediately.

Notes

  •  
  • If you enjoyed this recipe, please come back and give it a rating. I ❤️ hearing from you! 
  • ❤️
  • When slicing the potatoes, try to keep them at a consistent thickness. This will help them cook evenly and give your gratin a great texture.
  • Use a mandoline slicer if you have one. It makes slicing the potatoes a lot easier and ensures they are all the same thickness.
  • Don't rush the leeks. Cooking them slowly in butter or oil will bring out their natural sweetness and give your gratin a delicious flavor.
  • Feel free to make this dish a day ahead of time and reheat it for your dinner party. It'll save you time and the gratin will be just as delicious.

Nutrition Information

Show Details
Calories 367kcal (18%) Carbohydrates 45g (15%) Protein 13g (26%) Fat 16g (25%) Saturated Fat 9g (45%) Polyunsaturated Fat 1g Monounsaturated Fat 5g Trans Fat 0.2g Cholesterol 48mg (16%) Sodium 616mg (26%) Potassium 1023mg (29%) Fiber 3g (12%) Sugar 4g (8%) Vitamin A 981IU (20%) Vitamin C 17mg (19%) Calcium 316mg (32%) Iron 3mg (17%)

Nutrition Facts

Serving: 6Serving

Amount Per Serving

Calories 367 kcal

% Daily Value*

Calories 367kcal 18%
Carbohydrates 45g 15%
Protein 13g 26%
Fat 16g 25%
Saturated Fat 9g 45%
Polyunsaturated Fat 1g 6%
Monounsaturated Fat 5g 25%
Trans Fat 0.2g 10%
Cholesterol 48mg 16%
Sodium 616mg 26%
Potassium 1023mg 22%
Fiber 3g 12%
Sugar 4g 8%
Vitamin A 981IU 20%
Vitamin C 17mg 19%
Calcium 316mg 32%
Iron 3mg 17%

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

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