Herb-Infused Potatoes Au Gratin Foil Packets with Leeks

A Flavorful, Creamy Side Dish Perfect for Grilling or Baking

If you love creamy potatoes, aromatic herbs, and melt-in-your-mouth comfort food, you’re in for a treat. These Herb-Infused Potatoes Au Gratin Foil Packets with Leeks deliver all the indulgence of classic au gratin potatoes—but with a modern twist. Baked or grilled in individual foil packets, this recipe combines convenience with gourmet flavor, making it perfect for weeknight dinners, backyard cookouts, or cozy nights at home.

Why Foil Packets?

Foil packets make cooking simple, mess-free, and extremely flavorful. When sealed, the potatoes, cream, herbs, and leeks steam together, creating a rich, aromatic dish without extra pots and pans. Whether you throw them on the grill or slide them into the oven, the results are consistently tender and delicious.

Ingredients

4 medium potatoes, thinly sliced
1 large leek, washed thoroughly and thinly sliced
1 cup heavy cream (or half-and-half for a lighter option)
1 cup shredded Gruyère or sharp cheddar cheese
2 tablespoons butter, cut into small pieces
1 teaspoon garlic powder
1 teaspoon fresh thyme (or ½ teaspoon dried)
1 teaspoon fresh rosemary, finely chopped
Salt and pepper to taste
Aluminum foil

Instructions

1. Prep the Foil Packets

Tear off four large sheets of aluminum foil and lightly grease the center of each with a bit of butter or cooking spray.

2. Layer the Potatoes and Leeks

Divide the potato slices evenly among the packets, followed by a generous handful of sliced leeks. Season with salt, pepper, and garlic powder.

3. Add the Herbs and Creamy Goodness

Sprinkle thyme, rosemary, and half of the cheese over the vegetables. Drizzle each packet with a few tablespoons of heavy cream and top with butter pieces.

4. Seal the Packets

Fold the sides tightly to create a sealed, leak-proof packet. Leave a little space inside for steam circulation.

5. Cook to Perfection

On the grill: Cook over medium heat for 20–25 minutes.
In the oven: Bake at 400°F (200°C) for 25–30 minutes.
Open carefully—the steam will be hot!

6. Finish with Cheese

Sprinkle the remaining cheese on top and let it melt inside the open packet for 2–3 minutes before serving.

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Why This Recipe Works

Leeks add a delicate sweetness, balancing the richness of the cream and cheese.
Fresh herbs infuse every bite, giving the dish a gourmet flair.
Foil packets trap moisture, ensuring tender, perfectly cooked potatoes.
Easy cleanup, making this a great option for busy cooks or outdoor gatherings.

Serving Suggestions

These herb-infused potatoes pair beautifully with:

Grilled chicken, steak, or salmon
Roasted vegetables
Holiday roasts
Fresh green salads

Serve directly in the foil packets for a rustic presentation or transfer to a serving dish for a more elegant table.

Final Thoughts

Herb-Infused Potatoes Au Gratin Foil Packets with Leeks are proof that simple ingredients can create extraordinary flavor. Creamy, comforting, and deeply aromatic, this recipe transforms humble potatoes into a standout side dish. Whether you’re hosting a cookout, preparing a family dinner, or craving a comforting classic, these foil packets deliver richness, convenience, and crowd-pleasing taste—every time.