Cheesy Au Gratin Potatoes
Potatoes au Gratin is a classic comfort dish made with thinly sliced potatoes topped with a creamy cheese sauce and baked until golden and crispy. These gratins are typically made with cheese or breadcrumbs, which become crispy during baking. The result is a warm, creamy, cheesy side dish, perfect for family dinners, holidays, and get togethers.

This dish is popular worldwide because it combines simple ingredients like potatoes, milk, butter, and cheese into a delicious dish. Potatoes au Gratin are filling and delicious, adding a touch of luxury to any meal without being difficult to prepare.
Try Potatoes au Gratin
If you’ve never tried potatoes au Gratin before, now’s the time! . You can serve it with grilled chicken, steak, fish, or even enjoy it as a main course with a fresh salad. Kids usually love it because it’s creamy, cheesy, and has a slightly crunchy topping that tastes great.
Making homemade au gratin potatoes is easier than you think. All you need are a few ingredients, a baking tray, and an oven. The aroma of cheesy potatoes baking will add a warm, cozy feel to your kitchen. Plus, you can make it ahead of time, making it perfect for busy families or dinner parties.
Table of Contents
Ingredients for Au Gratin Potatoes
Here’s everything you’ll need to make this Au Gratin Potatoes
- 4 large russet potatoes, peeled and thinly sliced
- 3 tablespoons butter
- 3 tablespoons all-purpose flour
- 2 cups milk whole milk works best
- 1 cup shredded cheddar cheese plus extra for topping
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/4 teaspoon garlic powder optional
- 1/4 teaspoon paprika for garnish optional
How to Make Au Gratin Potatoes
Step One
The first thing you need to do is preheat the oven to 190°C (375°F). Lightly grease a baking tray with butter or cooking spray.
Step Two
Now, make the sauce: In a large saucepan over medium heat, melt the butter. Add the flour and cook for about 1 minute, stirring continuously, until you get a smooth paste.
Step Three
Now, slowly add the milk, stirring continuously. Continue stirring until the sauce thickens and becomes creamy, about 5-7 minutes. Then add the cheese: Stir in the grated Cheddar cheese until melted and smooth. Add salt, pepper, and garlic powder, if using.
Step Four
Now, try layering the potatoes: Arrange half the potato slices in the baking tray. Pour half of the cheese sauce over them. Repeat with the remaining potatoes and sauce.
Step Five
Topping and Bake: Sprinkle more cheese on top for a cheese crust. Cover the tray with foil and bake for 40 minutes. Remove the foil and bake for an additional 20 minutes, or until the top is golden brown and flaky and the potatoes are tender when pierced with a fork.
Step Six
Finally, chill the dish before serving: Let it rest for about 10 minutes before serving to firm up slightly and make it easier to remove.
Kitchen Equipment Needed :
Before you start cooking, make sure you have the following equipment ready:
- Cutting board
- Sharp knife or mandoline slicer
- Large saucepan
- Wooden spoon or whisk
- Measuring cups and spoons
- baking dish
- Aluminum foil
- Oven mitts
Tips for Making Perfect Au Gratin Potatoes
Use a mandoline slicer for evenly sliced potatoes.
Choose starchy potatoes like russets or Yukon golds for the creamiest texture.
For extra flavor, add a small amount of grated Parmesan to the cheese sauce.
If you want a little crunch, sprinkle breadcrumbs on top with the cheese.
Serving Suggestion
I like to serve this gratin with a simple and wonderful green salad and some drinks, such as Smoothie or any other delicious drink available. It is also our custom in our family that immediately after we finish eating this dish, we must serve some desserts, such as Tiramisu, muffins, or cookies…

Frequently Asked Question
Can I make Au Gratin Potatoes without cheese ?
Yes, but the dish will taste different. You can make a creamy sauce using just milk and butter for a dairy based potato bake, though cheese is what gives it the classic flavor.
How can I make this dish more flavorful ?
You can add garlic powder, onion powder, paprika, or even a pinch of nutmeg to the cheese sauce for more depth.
Can I freeze Au Gratin Potatoes ?
Yes, but the texture may change slightly. Cool completely, wrap tightly, and freeze for up to 2 months. Reheat in the oven until hot.
How do I reheat leftovers ?
Reheat covered in the oven at 350°F (175°C) until warm, or microwave individual portions in 30-second intervals.
Au Gratin Potatoes
Course: Side DishCuisine: French, American Comfort FoodDifficulty: Easy6
servings20
minutes1
hour300
kcalCreamy, cheesy, and golden-baked Au Gratin Potatoes make the perfect cozy side dish for family dinners, holidays, or any meal where you want something warm and comforting.
Ingredients
4 large russet potatoes, peeled and thinly sliced
3 tablespoons butter
3 tablespoons all-purpose flour
2 cups milk whole milk works best
1 cup shredded cheddar cheese plus extra for topping
1 teaspoon salt
1/2 teaspoon black pepper
1/4 teaspoon garlic powder optional
1/4 teaspoon paprika for garnish optional
Directions
- The first thing you need to do is preheat the oven to 190°C (375°F). Lightly grease a baking tray with butter or cooking spray.
- Now, make the sauce: In a large saucepan over medium heat, melt the butter. Add the flour and cook for about 1 minute, stirring continuously, until you get a smooth paste.
- Now, slowly add the milk, stirring continuously. Continue stirring until the sauce thickens and becomes creamy, about 5-7 minutes. Then add the cheese: Stir in the grated Cheddar cheese until melted and smooth. Add salt, pepper, and garlic powder, if using.
- Now, try layering the potatoes: Arrange half the potato slices in the baking tray. Pour half of the cheese sauce over them. Repeat with the remaining potatoes and sauce.
- Topping and Bake: Sprinkle more cheese on top for a cheese crust. Cover the tray with foil and bake for 40 minutes. Remove the foil and bake for an additional 20 minutes, or until the top is golden brown and flaky and the potatoes are tender when pierced with a fork.
- Finally, chill the dish before serving: Let it rest for about 10 minutes before serving to firm up slightly and make it easier to remove.
Notes
- Add milk slowly: Pour milk in gradually while whisking to prevent lumps and get a smooth, silky sauce.
- Shred your own cheese: Freshly shredded cheese melts more smoothly and tastes better than pre-shredded cheese.
- Add aromatics: Thinly sliced onions, garlic, or shallots between layers can add extra depth to the dish.
- Let it rest: Allow the dish to cool for 10 minutes after baking to set the layers and make serving easier.
You can add this post to your favorite Pinterest board!

