Description
Cheesy Potatoes Au Gratin is a classic, comforting dish featuring layers of thinly sliced Yukon Gold or Russet potatoes baked in a rich, creamy cheese sauce made from cheddar and Gruyère cheeses. This recipe results in a golden, bubbly, and tender casserole perfect as a hearty side for any meal.
Ingredients
Scale
Potatoes
- 3 pounds Yukon Gold or Russet potatoes, peeled and thinly sliced
Cheese Sauce
- 2 cups heavy cream
- 4 tablespoons butter
- 3 cloves garlic, minced
- 2 cups shredded cheddar cheese, divided
- 1 cup shredded Gruyère cheese, divided
- 1½ teaspoons salt
- ½ teaspoon black pepper
- 1 teaspoon fresh thyme leaves (optional)
Instructions
- Preheat Oven: Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish to prevent sticking.
- Prepare Potatoes: Peel the potatoes and slice them thinly and evenly to ensure uniform cooking and tenderness throughout the dish.
- Melt Butter: In a saucepan over medium heat, melt 4 tablespoons of butter until fully liquefied but not browned.
- Sauté Garlic: Add the minced garlic to the melted butter and sauté for about 30 seconds until fragrant, avoiding browning to prevent bitterness.
- Add Cream: Pour in the 2 cups of heavy cream into the saucepan with the butter and garlic. Warm gently over low heat without letting it boil, stirring occasionally.
- Melt Cheese: Stir in 1½ cups of shredded cheddar and ½ cup shredded Gruyère cheese until the mixture is melted smoothly and well combined.
- Season Sauce: Add salt, black pepper, and fresh thyme leaves if using, stirring to incorporate the flavors evenly.
- Layer Potatoes – First Layer: Arrange half of the thinly sliced potatoes evenly in the prepared baking dish, spreading them out for even coverage.
- Add Cheese Sauce – First Half: Pour half of the prepared cheese sauce over the first layer of potatoes, ensuring they are well coated.
- Layer Potatoes – Second Layer: Add the remaining sliced potatoes on top of the cheese sauce layer, maintaining an even distribution.
- Add Cheese Sauce – Second Half: Pour the rest of the cheese sauce evenly over the second potato layer, covering the surface fully.
- Top with Cheese: Sprinkle the remaining ½ cup cheddar cheese and ½ cup Gruyère cheese evenly on top to create a cheesy crust.
- Cover and Bake: Cover the baking dish tightly with foil and bake in the preheated oven for 45 minutes to allow the potatoes to cook through.
- Uncover and Brown: Remove the foil and continue baking for an additional 25 to 30 minutes, or until the top is golden brown and the potatoes are fork-tender.
- Rest Before Serving: Let the dish rest for 10 to 15 minutes once out of the oven to allow the sauce to thicken and the flavors to meld before serving.
Notes
- Use Yukon Gold potatoes for a buttery flavor and creamy texture or Russet potatoes for a starchier, fluffier bake.
- Slicing potatoes evenly is crucial for consistent cooking and a uniform dish.
- If Gruyère is unavailable, substitute with Swiss cheese for a similar flavor profile.
- For a sharper flavor, experiment with adding some Parmesan cheese to the topping.
- Leftovers can be refrigerated for up to 3 days and reheated in the oven to maintain texture.
