Potato Leek Gratin
This Potato Leek Gratin is a creamy and cozy side dish you’ll want at every weeknight dinner. With layers of buttery potatoes, tender leeks, and a ridiculously delicious cheese sauce in every bite, it’s completely irresistible!
Servings: 8
Ingredients
- 1 1/2 lbs. Yukon gold potatoes, about 5 medium potatoes peeled
- 1 tsp salt
- 1/2 tsp black pepper divided
- 1/4 cup unsalted butter
- 2 large leeks washed, trimmed, and thinly sliced
- 2 thyme sprigs
- 1/2 cup milk
- 1/2 cup heavy cream
- 3 garlic cloves minced
- 1 bay leaf
- 1 tsp dijon mustard
- 1/2 cup gruyere cheese grated
- 1/4 cup parmesan cheese grated
- 2 tbsp chives chopped
Instructions
- Preheat the oven to 350° F and grease a small casserole dish or 10 inch cast iron skillet with nonstick spray; set aside.
- Slice the potatoes into ⅛-inch rounds. Toss the potatoes with ¾ tsp salt and ¼ tsp pepper in a large bowl. Layer the rounds in the skillet in an even layer on the bottom of the skillet and continue layering potato rounds in even layers going up the skillet until out of rounds. Set aside.
- Melt the butter in a large skillet over medium heat and then add the leeks, remaining salt and pepper, and thyme. Cook until the leeks are tender, about 5-7 minutes. Discard the thyme before sprinkling the leeks overtop of the potatoes.
- In the same skillet used for the leeks, add the milk, cream, garlic, mustard, and a bay leaf to the skillet. Simmer for 5 minutes, stirring occasionally to get the browned bits of the bottom of the skillet. Remove the bay leaf.
- Pour the milk mixture over the leeks and potatoes. Top with grated gruyere and parmesan cheese. Cover with aluminum foil and bake for 40 minutes. Uncover and continue to bake until the cheese is bubbling, about 15 more minutes. Remove from the oven and let cool for 10 minutes before serving. Sprinkle with chopped chives and enjoy!
Notes
*Calories are per serving and are an estimation.
Nutrition
Serving: 1g | Calories: 232kcal | Carbohydrates: 19g | Protein: 6g | Fat: 15g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.2g | Cholesterol: 43mg | Sodium: 441mg | Potassium: 434mg | Fiber: 2g | Sugar: 2g | Vitamin A: 918IU | Vitamin C: 21mg | Calcium: 179mg | Iron: 1mg
