Cheesy Loaded Au Gratin Potatoes

There’s something undeniably comforting about a casserole of creamy, cheesy potatoes bubbling away in the oven. This recipe elevates the classic au gratin potatoes with layers of flavor and richness, making them the perfect side dish for any occasion. These potatoes are tender, cheesy, and utterly irresistible.

Recipe Details

• Flavor Profile: Rich, savory, and cheesy, with a hint of onion and garlic.
• Textures: Tender potatoes, creamy sauce, and a golden, bubbly cheese topping.
• Total Time: 20 minutes active time, 1 hour 15 minutes bake time.
• Difficulty: Easy. This recipe is straightforward, with simple steps and minimal prep work.

What You’ll Need

This recipe is a celebration of potatoes and cheese, but also relies on some aromatics and milk to create the perfect creamy texture. You’ll need Yukon Gold potatoes for the best texture and flavor. A combination of cheddar and Monterey Jack cheese provides a classic, melty, and flavorful cheesy top. Milk and butter make the sauce luscious. Finally, onions and garlic are responsible for the depth of flavor.

Ingredient Notes

• Yukon Gold Potatoes – These potatoes hold their shape well during baking and have a naturally buttery flavor that complements the cheese and cream sauce perfectly.
• Onion – A small yellow onion, thinly sliced, adds a savory base flavor.
• Minced Garlic – Freshly minced garlic provides a wonderful aroma and pungent flavor.
• Butter – Unsalted butter creates the base for the creamy sauce and helps to sauté the onions and garlic, creating flavor.
• All-Purpose Flour – This is used to thicken the sauce slightly.
• Milk – Whole milk creates the most luscious, creamy sauce.
• Cheddar Cheese – Sharp cheddar cheese provides a tangy, bold flavor that pairs perfectly with the potatoes.
• Monterey Jack Cheese – This cheese melts beautifully and adds a mild, creamy element.
• Salt & Pepper – These are essential for seasoning and bringing out all the flavors.

How to Make Cheesy Loaded Au Gratin Potatoes

1. Preheat your oven to 375°F / 190°C. Grease a 9×13 inch baking dish with cooking spray or butter. Set aside.
2. In a large skillet, melt the butter over medium heat. Add the sliced onion and cook until softened, about 5-7 minutes. Stir in the minced garlic and cook for another minute until fragrant.
3. Sprinkle the flour over the onions and garlic. Cook, stirring constantly, for 1 minute to cook out the raw flour taste.
4. Gradually whisk in the milk, ensuring there are no lumps. Bring the sauce to a simmer, stirring frequently, until it thickens, about 3-5 minutes.
   • Pro Tip: To prevent lumps, whisk the flour into the butter and cook for 1 minute before adding the milk slowly, whisking continuously.
5. Remove the skillet from the heat. Stir in 1 cup of the cheddar cheese and 1 cup of the Monterey Jack cheese until melted and smooth. Season with salt and pepper to taste.
6. Thinly slice the Yukon Gold potatoes using a mandoline or a sharp knife.
7. Layer the sliced potatoes in the prepared baking dish. Pour the cheese sauce evenly over the potatoes, making sure they are well coated.
8. Top with the remaining cheddar and Monterey Jack cheeses.
9. Cover the baking dish with aluminum foil. Bake for 45 minutes.
10. Remove the foil and bake for another 30 minutes, or until the potatoes are tender when pierced with a fork and the top is golden brown and bubbly.
11. Let the potatoes rest for 10 minutes before serving.

Recipe Tips

• For evenly cooked potatoes, try to slice them to a consistent thickness. A mandoline makes this incredibly easy.
• Don’t skip the foil! Covering the dish initially helps the potatoes cook evenly without the top browning too quickly.
• Letting the potatoes rest before serving allows the sauce to thicken slightly and the flavors to meld.
• If the top browns too quickly, tent the dish with foil.

FAQs

• Can I use different types of cheese?
  Yes, feel free to experiment with cheese! Gruyère, Swiss, or a blend of your favorite cheeses would work well. However, be aware that different cheese types will yield different flavor profiles.
• Can I make this ahead of time?
  Yes! You can assemble the dish up to 24 hours in advance. Cover and refrigerate, then add about 15-20 minutes to the baking time.
• How do I know when the potatoes are done?
  The potatoes should be easily pierced with a fork and the cheese on top should be bubbly and golden brown.

Serving Suggestions

• With Grilled Chicken or Steak: A hearty protein complements the richness of the potatoes.
• With a Crisp Green Salad: A fresh, light salad provides a nice contrast to the creamy potatoes.
• With Roasted Vegetables: Roasted broccoli, asparagus, or Brussels sprouts offer a colorful and healthy side.
• With a Simple Garlic Bread: Perfect for soaking up the delicious cheese sauce.

Make This Recipe in Advance

You can assemble the Cheesy Loaded Au Gratin Potatoes up to 24 hours in advance. Cover well with plastic wrap and store in the refrigerator. Add about 15-20 minutes to the baking time when baking from cold.

Cheesy Loaded Au Gratin Potatoes

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• Total Time: 1 hour 35 minutes
• Yield: 6-8 servings 1x

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Description

This recipe elevates the classic au gratin potatoes with layers of flavor and richness, making them the perfect side dish for any occasion. These potatoes are tender, cheesy, and utterly irresistible.

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Ingredients

Scale 1x2x3x

2 ½ pounds Yukon gold potatoes (6 to 7 medium potatoes), sliced into ⅛-inch-thick rounds
½ medium yellow onion, thinly sliced
Sauce:
3 tablespoons salted butter
¼ cup all-purpose flour
1 ½ cups whole milk or unsweetened almond milk
8 ounces sharp Cheddar cheese (2 cups)
¾ teaspoon kosher salt, plus more to taste
½ teaspoon garlic powder
Freshly ground black pepper
Toppings:
2 ounces shredded Gruyere cheese (½ cup)
2 ounces grated Parmesan cheese (½ cup)
Chopped fresh chives or parsley

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Instructions

Preheat the oven to 375F and lightly spray a 9-inch square baking dish with cooking spray. Arrange potato slices in rows, with onion slices in between.

Make the sauce by melting butter, whisking in flour, and slowly adding milk until smooth and combined. Bring to a boil, then simmer until thickened. Stir in Cheddar, salt, garlic powder, and pepper. Season as needed.

Pour the sauce over the potatoes and onions, cover with foil, and bake for 45 minutes.

Remove foil, sprinkle with Gruyre and Parmesan, and bake uncovered until golden brown and potatoes are tender. Let cool for 10 minutes and garnish with chives.

Store leftovers in an airtight container for up to 5 days and reheat in the microwave.

To make ahead, assemble the dish and refrigerate for up to 1 day before baking, adding extra baking time as needed.

Notes

For evenly cooked potatoes, try to slice them to a consistent thickness. A mandoline makes this incredibly easy.

Don’t skip the foil! Covering the dish initially helps the potatoes cook evenly without the top browning too quickly.

Letting the potatoes rest before serving allows the sauce to thicken slightly and the flavors to meld.

• Prep Time: 20 minutes
• Cook Time: 75 minutes
• Category: Side Dish
• Cuisine: American