This “Au Gratin Potatoes Recipe” is the ultimate comfort-food side dish, perfect for gatherings. Thinly sliced potatoes and onions are layered in a rich, homemade cheese sauce, then baked to golden perfection. It’s an excellent choice for holiday meals, pairing beautifully with roasted turkey, pot roast, or meatloaf.
Crafted from scratch, this dish is irresistibly creamy, cheesy, and full of flavor. Whether for family dinners or festive celebrations, these au gratin potatoes are sure to impress both kids and adults alike.
Ingredients and Substitutions:
- Yukon Gold Potatoes: These buttery potatoes are ideal, but russet or red potatoes can also work.
- Sweet Onion: Use white or yellow onions based on your preference.
- Butter: Swap salted for unsalted if needed.
- Flour: Use gluten-free flour for a gluten-free version.
- Milk and Heavy Cream: This recipe calls for 2 cups of liquid dairy, which can be a mix of milk, cream, or half-and-half.
Preparation Steps:
- Slice and Prep: Peel and thinly slice the potatoes and onions. A mandoline can speed up this process.
- Make Cheese Sauce: Prepare a roux by whisking butter, flour, and seasoning in a saucepan. Add milk and cream, cooking until thickened before melting in the cheese.
- Layer Ingredients: Alternate layers of potatoes, onions, and cheese sauce in a greased baking dish, seasoning each layer lightly.
- Bake: Cover and bake for 75 minutes, then uncover, top with additional cheese, and bake until golden and bubbling.
Serving and Storage:
- Serve warm, garnished with fresh herbs if desired.
- Store leftovers in an airtight container in the fridge for up to 5 days or freeze for up to a month. Reheat in a warm oven before serving.
This dish complements hearty mains like turkey or roast beef and will undoubtedly be a standout on any table!
Ingredients
- 3 pounds Yukon gold potatoes (peeled and thinly sliced (about 5 cups))
- 1 medium onion (cut in half then thinly sliced)
- 1 Tablespoon salted butter (for greasing the pan)
Cheese sauce
- 4 Tablespoons salted butter melted
- 3 Tablespoons flour
- 1 teaspoon fine sea salt
- ½ teaspoon garlic powder
- ¼ teaspoon black pepper
- 1 cup whole milk
- 1 cup heavy cream
- 2 cups cheddar cheese shredded
Topping
- 1 cup grated sharp cheddar cheese
Au Gratin Potatoes Recipe FAQS
What’s the difference between au gratin and scalloped potatoes?
The biggest difference between the two dishes is that scalloped potatoes do not traditionally include cheese, while au gratin potatoes do.
What pan is best for au gratin potatoes?
A glass or ceramic, 9×13″ baking dish.
Can I double this recipe?
Yes, double the ingredients and bake in two, 9×13″ baking dishes.
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