Creamy Homemade Au Gratin Potatoes

Name: Creamy Homemade Au Gratin Potatoes
Prep time: 20 min
Cook time: 60 min
Total time: 80 min
Yield: 6
Cuisine: American
Ingredients: 2 pounds russet potatoes, peeled and thinly sliced; 1/4 cup unsalted butter; 1/4 cup all purpose flour; 2 cups whole milk; 1 cup heavy cream; 2 cups sharp cheddar cheese, shredded; 1 teaspoon salt; 1/2 teaspoon black pepper; 1/2 teaspoon garlic powder

These tender potatoes in a rich cheese sauce are the ultimate comfort food for your dinner table.

By Recipes By Nani· 🌍 American· July 20, 2026

recipesbynani.com

Prep

20 minutes

Cook

60 minutes

Total

80 minutes

Serves

Au gratin potatoes are a classic favorite for a reason. There is something so comforting about tender potato slices baked in a velvety, cheesy sauce that makes every meal feel like a special occasion.

My biggest tip is to slice your potatoes as thinly as you can. This ensures they cook through evenly and soak up all that lovely sauce while they are in the oven. It is worth taking your time with the slicing to get that perfect texture.

🧺 Ingredients

2 pounds russet potatoes, peeled and thinly sliced
1/4 cup unsalted butter
1/4 cup all purpose flour
2 cups whole milk
1 cup heavy cream
2 cups sharp cheddar cheese, shredded
1 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon garlic powder

👩‍🍳Instructions

1
Preheat your oven to 375 degrees Fahrenheit and lightly grease a 9 by 13 inch baking dish.
2
Melt the butter in a saucepan over medium heat, then whisk in the flour and cook for about one minute until smooth.
3
Slowly pour in the milk and heavy cream while whisking constantly to prevent any lumps from forming.
4
Continue cooking the sauce until it thickens, then remove it from the heat and stir in the salt, pepper, garlic powder, and half of the shredded cheese.
5
Arrange half of the potato slices in the bottom of your prepared baking dish and pour half of the cheese sauce over them.
6
Repeat with the remaining potatoes and the rest of the sauce, then sprinkle the remaining cheese over the very top.
7
Cover the dish with foil and bake for 30 minutes, then remove the foil and bake for another 20 to 30 minutes until the potatoes are tender and the top is bubbly and golden.

💡 Tips

Let the potatoes rest for about ten minutes after taking them out of the oven to help the sauce set. You can store any leftovers in an airtight container in the fridge for up to three days and reheat them gently in the oven.

#comfort food #potatoes #vegetarian #dinner #side dish

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