Creamy Baked Scalloped Potatoes with Cheddar Cheese
A comforting layered casserole featuring thinly sliced potatoes and onions smothered in a rich, creamy white sauce and topped with melted cheddar cheese. The potatoes become tender while the top develops a beautiful golden crust. Perfect as a side dish for holiday dinners, Sunday roasts, or any meal that calls for hearty comfort food. This classic version uses a traditional roux-based sauce that creates the signature creamy texture that makes scalloped potatoes irresistible.
Ingredients
Instructions
- 1
Preheat oven to 375°F
- 2
Melt butter in saucepan over medium heat
- 3
Stir in flour and cook for 1-2 minutes
- 4
Gradually whisk in milk, cooking until mixture thickens and bubbles
- 5
Season with salt and pepper
- 6
Layer half of potatoes and onions in baking dish
- 7
Pour half of sauce over the top
- 8
Repeat layers
- 9
Sprinkle shredded cheese on top
- 10
Cover with foil and bake for 45 minutes
- 11
Remove foil and bake for additional 15 minutes until golden and bubbly
Tips
Use a mandoline or sharp knife to slice potatoes uniformly for even cooking throughout the casserole.
Let the casserole rest for 10 minutes after baking to allow the sauce to set before serving.
Choose starchy potatoes like Russets for best texture, as they absorb the creamy sauce beautifully.
Good to Know
Refrigerate leftovers for up to 3 days in covered container
Can be assembled 1 day ahead, cover and refrigerate, add 15 minutes to baking time
Serve hot as side dish with roasted meats or holiday dinners
Common Mistakes
Slice potatoes evenly to avoid some pieces being undercooked while others are mushy
Don't skip the resting time to avoid sauce running when served
Substitutions
FAQ
Can I make this dairy-free?
Yes, substitute plant-based milk and vegan butter, and use nutritional yeast or dairy-free cheese for similar flavor.
What if my sauce is too thick?
Gradually whisk in more milk while cooking to reach desired consistency before layering with potatoes.
How long will leftovers keep?
Properly stored in refrigerator, scalloped potatoes will keep for 3-4 days and can be reheated in oven or microwave.