This Garlic Gruyere Potato Gratin is a great option next to your next ham, steak, roast, or roasted chicken dinner! Rich, flavorful, and delicious. In this post you’ll get the recipe and all of our best tips for making sure this is the best pan of potatoes you and your guests have ever eaten. You can make this in your Traeger or in the oven!

Garlic Gruyere Gratin Recipe

Potatoes are one of the world’s best and most versatile foods. Like many people, I am mildly obsessed, and could eat potatoes with every meal if given the opportunity.

This recipe is a fun twist on potatoes au gratin and features lots of garlic and the earthy, savory notes of Gruyère cheese. It has simple ingredients, many of which you probably already have in your fridge and pantry, and you’ll be sure to impress your whole family and all of your guests whipping out these delicious made-from-scratch potatoes.

Get 75+ of my favorite Traeger Recipes here!

Traeger Garlic Gruyere Potato Gratin shopping list

Wondering if you have to hit the store? Here’s the list of items you’ll need to make this recipe. For specific amounts, please refer to the printable recipe card at the bottom of the post.

yukon gold potatoes
sea salt
ground black pepper
garlic
fresh thyme
shredded gruyere cheese
half and half

Try our Smoked Scalloped Potatoes too!

How to make Garlic Gruyere Potato Gratin

This is just the overview so you can see what you’re actually getting into here. When you are cooking, you’ll want to use the full recipe at the bottom of the page.

Preheat

Get your grill or oven fired up to 375°F.

Prep

Butter a 9×13 inch pan. Slice your potatoes. Grate your cheese (if you haven’t already).

Assemble

Toss the potato slices with the seasonings. Put half in the buttered baking dish. Top with half the cheese. Then add the other half of the potatoes, pour over the half and half, and then finally top with the remaining cheese.

Grill/Bake

Cover with foil and cook the potatoes for around 25-30 minutes.

Uncover and continue to cook for another 25-30 minutes, or until the potatoes are tender when pierced with a fork.

(Make sure to check the middle, that cooks slower than the edges!)

Rest & Enjoy

Let the potatoes rest for 5-10 minutes before slicing, and then serve hot.

These work great with my Double-Smoked Ham!

Garlic Gruyere Potato Gratin FAQ

What’s the best way to store the leftovers?

Cover any leftovers and store in the fridge for 2-3 days, max.

How should you reheat these potatoes?

We always use the microwave to reheat. An air fryer or oven would also work really well!

Are there any substitutes for the gruyere?

Sure are! You can use any shreddable cheese that melts well in this dish.

Try with our Smoked Prime Rib Roast!

More great potato recipes to love!

Yield: 12 servings

Garlic Gruyere Potato Gratin

Name: Garlic Gruyere Potato Gratin
Prep time: 20 min
Cook time: 1 h
Total time: 1 h 20 min
Yield: 12
Cuisine: American
Ingredients: 2 pounds yukon gold potatoes; ½ teaspoon sea salt; ½ teaspoon ground black pepper; 3 garlic cloves, minced; 1 teaspoon fresh thyme; 3 cups shredded gruyere cheese; 1 cup half and half

You're going to want an extra serving of this decadent garlic gruyere potato gratin! Serve this next to your next ham, rib roast, or plate of pork chops. It is so delicious!

Prep Time 20 minutes

Cook Time 1 hour

Total Time 1 hour 20 minutes

Ingredients

2 pounds yukon gold potatoes
½ teaspoon sea salt
½ teaspoon ground black pepper
3 garlic cloves, minced
1 teaspoon fresh thyme
3 cups shredded gruyere cheese
1 cup half and half

Instructions

Preheat your Traeger Grill or oven to 375°F. Grease a 9x13 inch baking dish with butter and set aside.
Slice potatoes thinly with a mandoline, ⅛ inch thick.
In a large bowl, add potato, salt, pepper, garlic and thyme. Toss gently.
Place half of the potato in the baking dish. Sprinkle half of the cheese. Add the other half of the potato on top.
Pour half and half over the potatoes then the remaining cheese.
Cover with an aluminum foil and bake in the middle of the Traeger (or oven) for 25 - 30 minutes. Then, remove foil and bake for another 20 - 25 minutes, until potatoes are cooked through. Test by piercing a fork through the potatoes.
Remove from the grill (or oven), let sit for 5-10 minutes, and serve hot.

Traeger Garlic Gruyere Potato Gratin

Garlic Gruyere Gratin Recipe