Here’s a complete guide to Au Gratin Potatoes, a classic creamy, cheesy side dish:
Au Gratin Potatoes Overview
Au Gratin Potatoes (or “Potatoes Au Gratin”) are thinly sliced potatoes baked in a rich, creamy cheese sauce. Unlike scalloped potatoes, they always include cheese.
- Texture: Tender potato slices with a creamy interior and golden, crispy top
- Flavor: Buttery, cheesy, savory
- Servings: 6–8
Ingredients
- 2 lbs (900 g) potatoes, peeled and thinly sliced
- 2 cups shredded cheese (cheddar is classic, or mix cheddar and Gruyère)
- 2 tbsp butter
- 2 tbsp all-purpose flour
- 2 cups milk
- 1 small onion, finely chopped (optional)
- Salt and pepper, to taste
- 1/4 tsp nutmeg (optional, for subtle warmth)
- 1/4 cup grated Parmesan (optional, for topping)
Instructions
1. Preheat Oven and Prepare Dish
- Preheat oven to 375°F (190°C).
- Grease a 9×13-inch baking dish with butter or cooking spray.
2. Make the Cheese Sauce
- In a saucepan, melt butter over medium heat.
- Stir in flour and cook 1–2 minutes to form a roux.
- Gradually whisk in milk, avoiding lumps.
- Simmer 3–5 minutes until sauce thickens.
- Stir in 1 1/2 cups of shredded cheese until melted and smooth.
- Season with salt, pepper, and optional nutmeg.
3. Assemble
- Layer half of the sliced potatoes in the baking dish.
- Pour half of the cheese sauce over them.
- Repeat with remaining potatoes and sauce.
- Sprinkle the remaining 1/2 cup cheese and optional Parmesan on top.
4. Bake
- Cover with foil and bake 40 minutes.
- Remove foil and bake an additional 20–25 minutes until top is golden and bubbly.
- Let rest 5 minutes before serving.
Tips for Perfect Au Gratin Potatoes
- Slice evenly: Use a mandoline or sharp knife for uniform cooking.
- Cheese choice: Sharp cheddar gives strong flavor; Gruyère adds a nutty, creamy taste.
- Make ahead: Assemble in advance, cover, and refrigerate. Bake when ready.
- Extra crisp topping: Mix breadcrumbs with Parmesan and sprinkle over the top before baking.
💡 Serving Ideas:
- Classic side for roast beef, ham, or chicken
- Add cooked bacon or caramelized onions for extra flavor
- Serve at holiday dinners for a rich, comforting dish
If you want, I can also make a slow-cooker version of Au Gratin Potatoes that’s creamy and hands-off, perfect for busy days.
Do you want me to do that?
