Easy Potatoes au Gratin

Potatoes au Gratin is a classic, comforting dish featuring thinly sliced potatoes baked in a rich, creamy cheese sauce. This easy recipe delivers a golden, bubbly top with layers of tender, cheesy potatoes. Perfect as a side dish for holidays, family dinners, or special occasions, this dish is surprisingly simple to make with just a few pantry staples!

Why You’ll Love This Recipe

  • Creamy & Cheesy – A rich, velvety sauce coats every bite.
  • Easy to Make – Simple steps with no complicated techniques.
  • Perfect Side Dish – Great for holidays, weeknights, or dinner parties.
  • Customizable – Add garlic, herbs, or extra cheese for more flavor.
  • Make-Ahead Friendly – Prep in advance and bake when needed.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

  • Russet or Yukon Gold potatoes, thinly sliced
  • Unsalted butter
  • Heavy cream (or half-and-half)
  • Whole milk
  • Garlic, minced
  • Salt and black pepper
  • Nutmeg (optional, for warmth)
  • Shredded cheddar cheese
  • Shredded Gruyère cheese (or Parmesan for a sharper flavor)
  • Fresh thyme or parsley (for garnish)

Directions

1. Prepare the Potatoes

  • Preheat oven to 375°F (190°C).
  • Peel and thinly slice the potatoes (about â…› inch thick) using a sharp knife or mandoline.

2. Make the Cheese Sauce

  • In a saucepan, melt butter over medium heat.
  • Add minced garlic and cook for 30 seconds until fragrant.
  • Pour in heavy cream and milk, then season with salt, black pepper, and nutmeg (if using).
  • Stir in half of the shredded cheese and whisk until melted and smooth.

3. Assemble the Dish

  • Grease a 9×13-inch baking dish with butter.
  • Arrange a layer of sliced potatoes in the dish, overlapping slightly.
  • Pour some of the cheese sauce over the potatoes.
  • Repeat layers until all potatoes and sauce are used.
  • Sprinkle the remaining shredded cheese on top.

4. Bake Until Golden

  • Cover with foil and bake for 45 minutes.
  • Remove foil and bake for another 15-20 minutes until bubbly and golden brown.
  • Let rest for 10 minutes before serving.

Servings and Timing

  • Servings: 6-8
  • Prep Time: 15 minutes
  • Cook Time: 1 hour
  • Total Time: 1 hour 15 minutes

Variations

  • Garlic Lovers – Add roasted garlic to the sauce for extra depth.
  • Herb-Infused – Mix in fresh rosemary or thyme for added aroma.
  • Bacon Cheddar Version – Sprinkle crispy bacon bits between layers.
  • Spicy Kick – Add a pinch of cayenne pepper or smoked paprika.
  • Lighter Option – Use half-and-half instead of heavy cream.

Storage/Reheating

  • Refrigeration: Store in an airtight container for up to 4 days.
  • Freezing: Freeze for up to 3 months; thaw in the fridge overnight before reheating.
  • Reheating: Warm in the oven at 350°F (175°C) for 15 minutes or microwave in 30-second bursts.

FAQs

What’s the best type of potato for au gratin?

Russet potatoes are starchy and creamy, while Yukon Golds hold their shape well and add a buttery texture.

Can I make this dish ahead of time?

Yes! Assemble the dish, cover, and refrigerate for up to 24 hours before baking.

How do I keep the cheese sauce from curdling?

Use low heat when melting the cheese and avoid boiling the cream.

Can I make this without cheese?

Yes! It will be more like scalloped potatoes, which use a creamy sauce without cheese.

What’s the difference between scalloped potatoes and potatoes au gratin?

Scalloped potatoes are baked in a cream sauce, while au gratin includes cheese for extra richness.

Can I use pre-shredded cheese?

It’s best to grate cheese from a block, as pre-shredded cheese contains anti-caking agents that prevent smooth melting.

What can I serve with potatoes au gratin?

Pairs well with steak, roasted chicken, pork chops, or grilled salmon.

Can I add breadcrumbs on top?

Yes! Sprinkle buttered panko breadcrumbs for a crispy topping.

How do I get the best golden-brown crust?

Broil for 2-3 minutes at the end of baking for a crispy, caramelized top.

Can I use plant-based milk and cheese?

Yes! Use oat or almond milk and dairy-free cheese for a vegan version.

Conclusion

This Easy Potatoes au Gratin recipe is creamy, cheesy, and absolutely irresistible. With layers of tender potatoes smothered in a rich cheese sauce, it’s the perfect side dish for any meal. Whether you’re making it for a holiday feast or a weeknight dinner, this dish is guaranteed to impress. Try it today and enjoy the ultimate comfort food!

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Easy Potatoes au Gratin

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This Potatoes au Gratin is a classic, comforting dish made with thinly sliced potatoes, a creamy garlic-infused sauce, and melted cheese. It’s easy to make and perfect for holidays or weeknight dinners!

  • Author: Beth
  • Prep Time: 15 minutes
  • Cook Time: 1 hour
  • Total Time: 1 hour 15 minutes
  • Yield: 6 servings 1x
  • Category: Side Dish
  • Method: Baking
  • Cuisine: French-American

Ingredients

Scale
  • 2 lbs russet or Yukon Gold potatoes, thinly sliced
  • 2 tablespoons unsalted butter
  • 2 cloves garlic, minced
  • 1 ½ cups heavy cream (or whole milk for a lighter version)
  • ½ teaspoon salt (or to taste)
  • ¼ teaspoon black pepper
  • ½ teaspoon thyme (optional)
  • 1 cup shredded cheddar cheese
  • ½ cup shredded Parmesan cheese
  • ½ cup shredded Gruyère or mozzarella cheese (optional, for extra cheesiness)
  • Fresh parsley or chives, for garnish (optional)

Instructions

1. Prep the Potatoes & Sauce
  1. Preheat oven to 375°F (190°C). Grease a 9×13-inch baking dish.
  2. Wash, peel, and thinly slice the potatoes (about ⅛-inch thick). A mandoline works great for even slices.
  3. In a small saucepan, melt butter over medium heat. Add garlic and sauté for 30 seconds until fragrant.
  4. Stir in the heavy cream, salt, pepper, and thyme (if using). Heat until warm but do not boil.
2. Assemble the Layers
  1. Arrange half of the sliced potatoes in an even layer in the baking dish.
  2. Pour half of the warm cream mixture over the potatoes.
  3. Sprinkle with half of the cheddar, Parmesan, and Gruyère (if using).
  4. Repeat with the remaining potatoes, cream mixture, and cheese.
3. Bake Until Golden & Bubbly
  1. Cover the dish with foil and bake for 40 minutes.
  2. Remove the foil and bake uncovered for another 20–25 minutes, or until the top is golden brown and bubbly.
  3. Let cool for 10 minutes before serving. Garnish with fresh parsley or chives if desired.
Serving & Storage

  • Serve warm with steak, roasted chicken, or a fresh salad.
  • Store leftovers in an airtight container in the fridge for up to 3 days.
  • Reheat in the oven at 350°F (175°C) for 15 minutes or in the microwave.

Notes


  • Swap heavy cream for half-and-half for a lighter version.
  • Add crispy bacon bits between layers for extra flavor.
  • Use sweet potatoes for a unique twist!

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