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Classic Scalloped Potatoes
Caroline

Classic Scalloped Potatoes

A creamy, cheesy, and comforting side dish made with layers of tender potatoes baked in a rich cheddar sauce. This timeless recipe is perfect for holiday meals, Sunday dinners, or anytime you need a hearty crowd-pleaser.
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Prep Time 20 minutes
Cook Time 1 hour 15 minutes
Total Time 1 hour 35 minutes
Servings: 8 servings
Course: Side Dish
Cuisine: American
Calories: 295
Ingredients Equipment Method Notes

Ingredients
  

  • 4 large russet potatoes, thinly sliced
  • 1 medium onion, finely chopped
  • 3 tbsp butter
  • 3 tbsp all-purpose flour
  • 2 cups whole milk
  • 1½ cups shredded sharp cheddar cheese
  • ½ tsp garlic powder
  • ¼ tsp paprika
  • ¼ cup grated Parmesan cheese
  • Salt and pepper, to taste

Equipment

  • 9x13-inch baking dish
  • sharp knife or mandoline slicer
  • Medium saucepan
  • Whisk and wooden spoon
  • aluminum foil

Method
 

  1. Set oven to 350°F (175°C). Grease a 9x13-inch baking dish.
  2. Melt butter in a saucepan over medium heat. Add chopped onion and cook until softened. Stir in flour, garlic powder, salt, and pepper to create a roux.
  3. Gradually whisk in milk. Cook until mixture thickens and begins to bubble.
  4. Remove from heat and stir in shredded cheddar until smooth.
  5. Arrange half the sliced potatoes in the baking dish. Pour half of the cheese sauce over them. Repeat with remaining potatoes and sauce.
  6. Sprinkle Parmesan and paprika over the top. Cover with foil and bake for 45 minutes. Remove foil and bake an additional 30 minutes until golden and bubbly.
  7. Allow dish to rest for 10 minutes before serving for best texture.

Notes

  • For best results, slice potatoes using a mandoline for consistent thickness.
  • Always taste and adjust seasoning in the cheese sauce before layering with potatoes.
  • If doubling the recipe, extend bake time by 15–20 minutes to ensure tenderness.