This classic scalloped potato recipe is everything you want it to be - creamy, tender, cheesy and delicious. It is sure to please a crowd and is big enough to feed one too!
American, British, French
Servings: 10 people
Calories: 346 kcal
to grease the pan
Yukon Gold potatoes
Freshly ground black pepper
very thinly sliced
fresh thyme leaves
grated Gruyère cheese
grated Parmesan cheese
Pre-heat the oven to 375°F. Grease a 9x13-inch baking pan or casserole dish with butter.
Using a mandolin slicer or a sharp knife, evenly slice the potatoes into ⅛-inch thin slices. Pat the potato slices dry with paper towels or clean kitchen towel.
Melt the butter in a medium saucepan. Add the flour and stir into a paste to form a roux. Cook for a minute or two. Slowly pour in the milk and whisk until the sauce is smooth. Stir in the nutmeg, salt and season with freshly ground black pepper to taste.
Layer one third of the potatoes evenly in the bottom of the prepared pan. Top with one third of the sliced onions and one third of the fresh thyme leaves. Pour one third of the of the sauce over the potatoes and spread it out evenly over the vegetables with a spatula. Repeat two more times with layers of potatoes, onions, thyme and sauce. Sprinkle the Gruyère and Parmesan cheeses on top.
Transfer the pan to the oven and bake at 375°F for 50 to 60 minutes until the cheese on top is golden brown and the potatoes are soft when pierced with a knife.
Let the scalloped potatoes rest at least 15 minutes before serving. Serve warm.
Make ahead – If you assemble and bake these scalloped potatoes ahead of time, only bake for 45 minutes. Let it cool completely and then wrap well and store in the refrigerator. Remove it from the fridge 1 hour before re-heating. Cover with foil and reheat in a 350°F oven for about 30 to 35 minutes, removing the foil the last 10 minutes of the cooking time.
To prep ahead – boil the sliced potatoes for 2 minutes to stop the oxidation process, slice the onions and make the sauce. Store the ingredients separately. Assemble the day of and bake for 45 to 50 minutes.
Amount Per Serving (1 serving)
Calories from Fat 162
% Daily Value*
Saturated Fat 10g50%
Trans Fat 1g
Vitamin A 647IU13%
Vitamin C 29mg35%
* Percent Daily Values are based on a 2000 calorie diet.