How To Cook Potato Gratin On Your Traeger Grill? (Step-By-Step Guide)

Looking for a delicious and easy side dish to serve at your next cookout? Look no further than Traeger potato gratin.

This dish has all the comforting flavors of a traditional potato gratin but with the added bonus of a smoky, grilled flavor.

In this recipe, I’ll show you how to make a delicious Traeger potato gratin that will have your guests coming back for seconds.

Potato Gratin

Ingredients for Traeger Potato Gratin:

  • 4 large russet potatoes
  • 2 cups of heavy cream
  • 2 cloves of garlic, minced
  • 1 tablespoon of thyme, chopped
  • 1 tablespoon of rosemary, chopped
  • 1 1/2 cups of grated Parmesan cheese
  • Salt
  • Pepper

Instructions for Making Traeger Potato Gratin:

Step 1

Preheat your Traeger grill to 350°F.

Step 2

Peel and slice the potatoes thinly, about 1/8 inch thick.

Step 3

In a saucepan, heat the heavy cream over medium heat. Add in the garlic, thyme, rosemary, salt, and pepper. Let the mixture come to a simmer, and then remove it from the heat.

Step 4

Layer the potato slices in a 9×13-inch baking dish. Pour the cream mixture over the potatoes, making sure to cover each potato slice. Sprinkle the grated Parmesan cheese over the top.

Step 5

Place the baking dish on the grill grates and close the lid. Let the potato gratin cook for 45-50 minutes or until the potatoes are cooked through, and the top is golden brown.

Step 6

Remove the baking dish from the grill and let the potato gratin cool for a few minutes before serving.

Why Make Traeger Potato Gratin?

Grilling the potatoes on a Traeger grill gives them a unique smoky flavor you won’t get from traditional potato gratin recipes.

The high heat of the grill also helps to create a crispy texture on the top of the gratin. This dish is perfect for grilled meat, especially when served alongside fresh vegetables.

Tips for Making Perfect Traeger Potato Gratin:

  • Use a mandoline to slice the potatoes thinly and evenly.
  • Use heavy cream to create a rich and creamy gratin.
  • Don’t skimp on the herbs and spices. They add depth of flavor to the dish.
  • Use freshly grated Parmesan cheese for the best flavor.
  • Let the potato gratin rest for a few minutes before serving to allow the flavors to meld together.

My Final Thoughts

Traeger potato gratin is a delicious and easy side dish that is perfect for any cookout. The smoky, grilled flavor of the potatoes combined with the creamy and cheesy topping makes this dish a crowd-pleaser. With these simple tips and tricks, you’ll be able to make a perfect Traeger potato gratin every time.

Frequently Asked Questions

Can I Use Different Types of Potatoes for This Recipe?

While russet potatoes work best for potato gratin, you can also use Yukon Gold or red potatoes.

Can I Add Other Ingredients to This Recipe?

Absolutely! For additional flavor, feel free to add other ingredients, such as bacon, caramelized onions, or roasted garlic.

What Can I Serve With Traeger Potato Gratin?

This dish pairs well with grilled steak, chicken, or fish. You can also serve it alongside a salad or roasted vegetables for a complete meal.

Make sure to check out my other Traeger Potato Recipes here.


I’m Glen, an ordinary guy with an extraordinary passion for grilling. I was recently gifted a Traeger wood pellet grill for my birthday. I knew little about setting up, operating, cooking with, or maintaining a Traeger grill. I started this website to document my findings as I learn to "master the flames".

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