Pat's Au Gratin Potatoes

Transform your dinnertime side dish into a showstopping comfort food with Pat's Au Gratin Potatoes—a rich, creamy casserole that's the epitome of indulgence. This recipe features perfectly tender, thinly sliced Russet potatoes layered with a velvety cheese sauce made from sharp cheddar and Parmesan, infused with savory garlic and onion powder for unbeatable flavor. Topped optionally with golden, buttery breadcrumbs, this classic dish achieves the ultimate balance of creaminess and crunch. With minimal prep time and a baked-to-perfection finish, it’s the ideal addition to holiday feasts, potlucks, or cozy family dinners. Serve up cheesy, hearty goodness that’s guaranteed to leave everyone coming back for seconds! Keywords: au gratin potatoes, cheesy potato casserole, comfort food recipe, holiday side dish, easy potato recipe.

Nutriscore Rating: 62/100

Prep Time:20 mins

Cook Time:60 mins

Total Time:80 mins

Servings: 6

Ingredients

• 6 medium Russet potatoes
• 4 tablespoons Unsalted butter
• 3 tablespoons All-purpose flour
• 2 cups Whole milk
• 1 cup Heavy cream
• 2 cups Sharp cheddar cheese, shredded
• 1 cup Parmesan cheese, grated
• 1 teaspoon Garlic powder
• 1 teaspoon Onion powder
• 1 teaspoon Salt
• 0.5 teaspoon Ground black pepper
• 0.5 cup Breadcrumbs (optional for topping)

Directions

Step 1

Preheat your oven to 375°F (190°C). Grease a 9x13-inch baking dish with butter or non-stick spray.

Step 2

Peel the potatoes and slice them into thin, even rounds about 1/8-inch thick. Use a mandoline slicer for uniformity, if available.

Step 3

In a large saucepan over medium heat, melt the butter. Stir in the flour and cook for 1-2 minutes, whisking constantly, until the roux is lightly golden.

Step 4

Gradually whisk in the milk and heavy cream, ensuring no lumps remain. Cook for 4-5 minutes, stirring frequently, until the mixture thickens slightly.

Step 5

Reduce heat to low and stir in the sharp cheddar cheese, parmesan cheese, garlic powder, onion powder, salt, and black pepper. Continue stirring until the cheese is fully melted and the sauce is smooth.

Step 6

Arrange half of the sliced potatoes in an even layer at the bottom of the prepared baking dish. Pour half of the cheese sauce over the potatoes, spreading it evenly.

Step 7

Repeat with the remaining potato slices and cheese sauce, ensuring all the potatoes are coated.

Step 8

If desired, sprinkle breadcrumbs over the top for extra texture and flavor.

Step 9

Cover the dish with aluminum foil and bake in the preheated oven for 30 minutes. Remove the foil and bake for an additional 25-30 minutes, or until the potatoes are tender and the top is golden and bubbly.

Step 10

Allow the dish to rest for 10 minutes before serving to let the cheese sauce thicken slightly. Enjoy!

Nutrition Facts

Serving size	(2203.1g)

Amount per serving	% Daily Value*
Calories	3966.8

Total Fat 241.4g	0%
Saturated Fat 149.4g	0%
Polyunsaturated Fat 0.5g
Cholesterol 742.6mg	0%
Sodium 5881.4mg	0%
Total Carbohydrate 310.7g	0%
Dietary Fiber 21.0g	0%
Total Sugars 38.6g
Protein 142.1g	0%

Vitamin D 262.7IU	0%
Calcium 3300.4mg	0%
Iron 16.7mg	0%
Potassium 6945.2mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 54.5%

Protein: 14.3%

Carbs: 31.2%