How to Make Creamy Au Gratin Potatoes

Comfort food lovers, rejoice! If you’re a fan of cheesy, creamy, and golden-browned dishes that melt in your mouth, Au Gratin Potatoes are sure to win a top spot on your favorites list.

Loved for their luscious layers of tender potatoes smothered in a velvety cheese sauce, this dish is as decadent as it is satisfying. Whether you're serving it as a side dish during the holidays or as a comforting weeknight meal, Au Gratin Potatoes are always a crowd-pleaser.

This blog provides a step-by-step guide to mastering this classic recipe. Read on to discover tips for achieving the perfect texture, the best types of cheese to use, and how to elevate this dish with creative variations.

What Are Au Gratin Potatoes?

Au Gratin Potatoes, also known as Potatoes au Gratin, is a traditional French dish made by layering thinly sliced potatoes with a creamy sauce and cheese, then baking until bubbly and golden. The French term “au gratin” refers to a crispy crust formed on top, typically achieved with breadcrumbs, cheese, or both.

While the dish might sound fancy, it’s surprisingly simple to make at home with just a few pantry staples. The result? An irresistible, indulgent dish that pairs perfectly with roasted meats, grilled vegetables, or even as a standalone delight on your table.

Why You'll Love This Recipe

Simple Ingredients: You likely already have most of the ingredients in your kitchen.
Restaurant-Quality Taste: Homemade Au Gratin Potatoes rival anything you'll find at a fine dining restaurant.
Versatile: Works wonderfully as a side dish or even the star of your cozy supper.
Customizable: Easily adjust toppings, cheeses, and seasonings to suit your taste.

Ingredients You'll Need

Before starting, gather these staple ingredients:

Potatoes (2 lbs): Yukon Gold or Russet potatoes work best for their creamy texture.
Butter (3 tbsp): Use unsalted for better control of seasoning.
Heavy Cream (2 cups): Provides richness and creaminess.
Whole Milk (1 cup): Adds a bit of lightness to balance the cream.
Cheese (2 cups shredded): Gruyere, Parmesan, or a sharp Cheddar are excellent choices.
Garlic (2 cloves, minced): Adds depth of flavor.
Nutmeg (¼ tsp): A traditional addition for an earthy warmth.
Salt & Pepper (to taste): Season throughout to enhance flavors.
Breadcrumbs (optional) (½ cup): For an extra-crispy top layer.
Fresh Herbs (optional): Chopped parsley, chives, or thyme for garnish.

Kitchen Gear You’ll Need

Mandoliner or sharp knife for slicing potatoes thinly.
Large saucepan for making the cheese sauce.
Baking dish or casserole pan.
Whisk for combining the sauce ingredients.

How to Make Creamy Au Gratin Potatoes at Home

Step 1: Preheat and Prep

Preheat your oven to 375°F (190°C). Grease a baking dish with butter or cooking spray to prevent sticking.

Step 2: Slice Your Potatoes

Wash and peel the potatoes, then slice them into thin, even rounds about 1/8 inch thick. Use a mandoline if you have one for uniform slices, which ensures even cooking.

Step 3: Prepare the Cheese Sauce

Melt the butter in a saucepan over medium heat.
Add the minced garlic and stir until aromatic, about 30 seconds.
Pour in the cream and milk, then whisk together.
Gradually stir in your shredded cheese, saving a small amount for the topping. Whisk until melted and smooth.
Add a pinch of nutmeg, salt, and pepper to taste. Remove from heat.

Step 4: Layer the Dish

Arrange a single layer of sliced potatoes in the bottom of the greased baking dish.
Pour a small amount of cheese sauce over the potatoes to coat them lightly.
Repeat the layering process (potatoes, sauce) until you've used all the ingredients. Ensure the top layer is sauce-covered for maximum creaminess.

Step 5: Add Topping

Sprinkle the reserved cheese and breadcrumbs on top of the dish for that signature gratin crust.

Step 6: Bake

Cover with aluminum foil and bake for 45 minutes. Then, remove the foil and bake for an additional 20-25 minutes, until the top is golden brown and bubbly.

Step 7: Garnish and Serve

Allow the dish to rest for 10 minutes, then garnish with fresh herbs like parsley or thyme before serving.

Tips for Perfect Au Gratin Potatoes

Choose the Right Potato: Yukon Golds yield a creamy texture, while Russets give a softer, fluffier result.
Thin Slices Are Key: Thick slices may cook unevenly, so keep them around 1/8 inch thick.
Season Thoroughly: Season each layer of potatoes lightly with salt and pepper to ensure every bite is flavorful.
Avoid Pre-Grated Cheese: Pre-shredded cheese often contains anti-caking agents, which prevent smooth melting. Shred cheese fresh for the best results.
Be Patient: Resist the urge to scoop right out of the oven! Resting allows the cream sauce to thicken.

Creative Variations to Try

Smoked Gruyère & Thyme: Swap in smoked Gruyère for a deeper flavor and mix fresh thyme into the sauce.
Bacon & Chives: Add crispy cooked bacon and chopped chives for a savory twist.
Vegan Option: Use dairy-free cheese, almond milk, and a plant-based cream alternative.
Spicy Kick: Add a dash of cayenne pepper or red chili flakes to the sauce for a little heat.

Pairings for Au Gratin Potatoes

Need meal inspiration? Au Gratin Potatoes pair beautifully with:

Roast beef or chicken for a hearty main dish.
Grilled salmon or cod for a lighter pairing.
A fresh, zesty green salad to balance the richness.
Steamed green beans or asparagus as a simple veggie side.

Bring the Restaurant Home with Au Gratin Potatoes

There’s nothing quite like the comfort of a warm, cheesy casserole, and Au Gratin Potatoes never disappoint. With its silky layers of rich potato and gooey cheese, it’s a dish that satisfies every craving. Whether you’re hosting a dinner party or curling up to indulge on your own, this recipe is guaranteed to become a household favorite.

Why wait? Grab those potatoes, preheat your oven, and treat yourself (and your loved ones) to a dish that deserves a standing ovation. Trust us, one bite and they’ll be asking, “Can I have seconds?”