Caramelized Leek Potato Gratin

Name: Caramelized Leek Potato Gratin
Prep time: 20 min
Cook time: 50 min
Total time: 1 h 10 min
Yield: 4 servings
Ingredients: 4 large potatoes, thinly sliced; 3 leeks, cleaned and sliced; 2 cups heavy cream; 1 cup grated Gruyère cheese; 1 cup grated Parmesan cheese; 2 tablespoons unsalted butter; Salt and pepper to taste; Fresh thyme for garnish

Highlighted under: Comfort Food Recipes

This Caramelized Leek Potato Gratin is a deliciously creamy side dish that elevates any meal with its rich flavors and comforting texture.

Created by

Emily Carter

Last updated on 2025-12-29T16:18:28.402Z

This gratin is inspired by traditional French dishes, combining the sweetness of caramelized leeks with layers of perfectly cooked potatoes. It's perfect for family gatherings or as a comforting weeknight dinner.

        Why You'll Love This Recipe
        Rich, savory flavor from caramelized leeks
Creamy, cheesy layers that satisfy every craving
Perfect for both special occasions and everyday meals

      

The Magic of Caramelized Leeks

Caramelized leeks are the star of this gratin, bringing a depth of flavor that elevates the dish. When cooked slowly, the natural sugars in the leeks caramelize, resulting in a sweet and savory profile that pairs beautifully with the creamy potatoes. This cooking technique not only enhances the taste but also adds a lovely golden color that makes the gratin visually appealing.

Incorporating leeks into your dishes is an excellent way to introduce new flavors. They are milder than onions, providing a perfect base for various recipes. This gratin showcases how leeks can transform a simple side dish into something extraordinary, making it a must-try for any home cook looking to impress.

Choosing the Right Potatoes

For a gratin, the type of potato you choose can significantly affect the texture and flavor. Starchy potatoes like Russets or Yukon Golds are ideal because they become tender and creamy when baked. Their ability to absorb flavors makes them perfect for layering with the rich cheeses and caramelized leeks in this dish.

When slicing the potatoes, aim for uniform thickness to ensure even cooking. A mandoline slicer can be a helpful tool to achieve consistent slices. This precision will help create that ideal creamy texture, allowing the layers to meld together beautifully as they bake.

Serving Suggestions

Caramelized Leek Potato Gratin is versatile and can complement a variety of main dishes. It pairs wonderfully with roasted meats, grilled chicken, or even a hearty vegetarian main course. The rich, creamy layers provide a comforting contrast to lighter proteins, making it a favorite at family gatherings and holiday dinners.

For an elegant touch, serve the gratin with a simple green salad dressed in a light vinaigrette. The freshness of the salad balances the richness of the gratin, creating a well-rounded meal that will satisfy your guests. Don't forget to save some for leftovers; this dish tastes even better the next day!

Ingredients

For the Gratin

4 large potatoes, thinly sliced
3 leeks, cleaned and sliced
2 cups heavy cream
1 cup grated Gruyère cheese
1 cup grated Parmesan cheese
2 tablespoons unsalted butter
Salt and pepper to taste
Fresh thyme for garnish

Make sure to slice the potatoes evenly for uniform cooking.

Instructions

Prepare the Leeks

In a large skillet, melt the butter over medium heat. Add the sliced leeks and sauté until they are caramelized and golden, about 15 minutes. Season with salt and pepper.

Layer the Ingredients

In a greased baking dish, layer half of the potatoes followed by half of the caramelized leeks. Sprinkle with half of the Gruyère and Parmesan cheese. Repeat the layers with the remaining ingredients.

Add Cream and Bake

Pour the heavy cream over the layered gratin. Cover with foil and bake in a preheated oven at 350°F (175°C) for 30 minutes. Remove the foil and bake for an additional 20 minutes until golden and bubbly.

Serve

Let the gratin cool for a few minutes before serving. Garnish with fresh thyme.

Enjoy your creamy and delicious Caramelized Leek Potato Gratin!

Storage Tips

If you have leftovers, storing them properly can help maintain the gratin's delicious flavors. Allow the dish to cool completely before transferring it to an airtight container. You can refrigerate it for up to three days, making it an excellent make-ahead option for busy weekdays.

To reheat, simply place the gratin in the oven at 350°F (175°C) until heated through. Covering it with foil can help retain moisture and prevent the top from over-browning. This comfort food is perfect for enjoying again without losing its delightful creaminess.

Variations to Try

Feel free to get creative with this gratin recipe! Consider adding sautéed mushrooms or spinach for an extra layer of flavor and nutrition. These ingredients not only enhance the taste but also add visual appeal, making your gratin even more enticing.

For a different cheese experience, experiment with other varieties like fontina, cheddar, or a blue cheese for a bolder flavor. Each cheese will contribute to the overall richness, allowing you to customize the dish according to your preferences.

Questions About Recipes

→ Can I prepare this gratin in advance?

Yes, you can assemble the gratin a day ahead, cover it tightly, and refrigerate it. Bake it just before serving.

→ What type of potatoes work best?

Yukon Gold or Russet potatoes are ideal for gratins as they hold their shape and lend a creamy texture.

→ Can I use a different type of cheese?

Absolutely! Feel free to experiment with different cheeses such as cheddar or fontina for a unique flavor.

→ How do I store leftovers?

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven for best results.