Few side dishes feel as comforting and satisfying as a pan of homemade au gratin potatoes fresh from the oven. Thinly sliced potatoes are layered with a rich garlic cream sauce and plenty of melted cheese, then baked until tender and golden. The result is a creamy, cheesy potato casserole with a beautifully browned top and a soft, velvety center. This classic French-inspired dish is perfect for holiday dinners, family gatherings, or whenever you want to turn simple potatoes into something special.
Main Essence of This Dish
- Thin layers of potatoes absorb a rich garlic-infused cream sauce.
- A generous amount of cheese creates a golden, bubbly crust.
- Simple pantry ingredients transform into an elegant side dish.
- Perfect for holidays, potlucks, Sunday dinners, and special occasions.
- Can be prepared ahead and reheated without losing its creamy texture.
Recipe Information
| Detail | Information |
|---|---|
| Preparation Time | 20 minutes |
| Cooking Time | 1 hour 25 minutes |
| Total Time | 1 hour 45 minutes |
| Servings | 8 |
| Course | Side Dish |
| Cuisine | French-Inspired |
Ingredients
| Ingredient | Amount |
|---|---|
| Russet potatoes, peeled | 2½ pounds (1.1 kg) |
| Heavy cream | 1½ cups |
| Whole milk | 1 cup |
| Unsalted butter, melted | 2 tablespoons |
| Garlic cloves, minced | 2 |
| Gruyère cheese, shredded | 2 cups |
| Sharp cheddar cheese, shredded | 1 cup |
| Fresh thyme leaves | 2 teaspoons |
| Salt | 1 teaspoon |
| Black pepper | ½ teaspoon |
Also Read: Ham Fried Rice Recipe
How to Make Au Gratin Potatoes
Step 1: Prepare the Cream Mixture
In a large bowl, whisk together the heavy cream, milk, melted butter, minced garlic, salt, pepper, and thyme until fully combined.
Step 2: Preheat the Oven
Preheat your oven to 350°F (180°C). Lightly grease a 9×13-inch baking dish with butter.
Step 3: Slice the Potatoes
Peel and slice the potatoes into thin rounds about 1/8 inch thick. Try to keep the slices uniform so they cook evenly.
Step 4: Layer the Ingredients
Arrange one-third of the potato slices in the baking dish. Spoon over some of the cream mixture and sprinkle with a portion of the Gruyère and cheddar cheese. Repeat the layers two more times, finishing with a generous layer of cheese on top.
Step 5: Cover and Bake
Cover the dish tightly with aluminum foil and bake for about 70 minutes, or until the potatoes are nearly tender.
Step 6: Brown the Top
Remove the foil and continue baking for 15 to 20 minutes until the cheese is bubbling and the top develops a deep golden-brown color.
Step 7: Rest Before Serving
Allow the potatoes to rest for 10 minutes before serving. This helps the sauce thicken and makes the dish easier to slice.
Also Read: Baked Pork Ribs in Oven Recipe
Tips for the Best Au Gratin Potatoes
- Use starchy potatoes such as Russet potatoes for the creamiest texture.
- Freshly grate the cheese for smoother melting and better flavor.
- A mandoline slicer helps create evenly thin potato slices.
- Do not skip the resting time after baking.
- Add a pinch of nutmeg to the cream mixture for extra depth of flavor.
Serving Suggestions
These cheesy au gratin potatoes pair beautifully with roast chicken, baked ham, grilled steak, pork chops, turkey, or roasted vegetables. They are especially popular during Thanksgiving, Christmas, Easter, and family celebrations.
Also Read: Easy Curry Ramen Recipe
Nutritional Information
The nutritional values below are estimates based on 8 servings.
| Nutrient | Amount Per Serving |
|---|---|
| Calories | 360 |
| Carbohydrates | 28g |
| Protein | 12g |
| Total Fat | 22g |
| Saturated Fat | 13g |
| Cholesterol | 70mg |
| Sodium | 420mg |
| Fiber | 3g |
| Sugar | 2g |
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Frequently Asked Questions
What is the difference between scalloped potatoes and au gratin potatoes?
Scalloped potatoes are usually made with a creamy sauce but little or no cheese, while au gratin potatoes include plenty of cheese layered throughout the dish and on top.
Can I make au gratin potatoes ahead of time?
Yes. You can assemble the dish up to a day in advance, cover it, and refrigerate it until ready to bake.
What cheese works best for au gratin potatoes?
Gruyère is the traditional choice because of its rich, nutty flavor, but cheddar, Monterey Jack, or a combination of cheeses also work well.
Can I freeze au gratin potatoes?
Yes. Allow the dish to cool completely, then wrap tightly and freeze for up to 2 months. Thaw overnight in the refrigerator before reheating.
