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Delicious cheesy scalloped potatoes served in a creamy sauce

Cheesy Scalloped Potatoes

Indulge in the creamy goodness of cheesy scalloped potatoes, a heartwarming dish that combines simplicity with rich flavors, perfect for any occasion.
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Prep Time 20 minutes
Cook Time 1 hour 5 minutes
Total Time 1 hour 25 minutes
Servings: 8 servings
Course: Comfort Food, Side Dish
Cuisine: American
Calories: 410
Ingredients Method Notes

Ingredients
  

Sauce ingredients
  • 2 tablespoons unsalted butter
  • 1 small yellow onion, finely chopped
  • 2 cloves garlic, minced
  • 2 tablespoons all-purpose flour
  • 1.5 cups whole milk
  • 1 cup heavy cream
  • 1 teaspoon salt
  • 0.5 teaspoon black pepper
  • 0.5 teaspoon dried thyme
  • 1.5 cups shredded sharp cheddar cheese
  • 0.5 cup grated Parmesan cheese
Main ingredients
  • 2 pounds Yukon Gold potatoes, thinly sliced (about 1/8 inch)
  • Chopped fresh parsley (optional garnish)

Method
 

Preparation
  1. Preheat oven to 375°F (190°C) and grease a 9×13-inch baking dish.
  2. In a medium saucepan, melt butter over medium heat.
  3. Add onion and cook for 3–4 minutes until soft.
  4. Stir in garlic and sauté for 30 seconds until fragrant.
  5. Whisk in flour and cook for 1–2 minutes, allowing it to thicken a little.
  6. Gradually whisk in milk and cream, then add salt, pepper, and thyme.
  7. Simmer for 3–5 minutes until it thickens up nicely.
  8. Remove from heat and stir in 1 1/2 cups cheddar cheese until melted and smooth.
Assembly
  1. Layer half of the sliced potatoes into the dish.
  2. Pour over half the cheese sauce.
  3. Repeat layering with the remaining potatoes and cheese sauce.
  4. Top with the remaining 1/2 cup cheddar and all Parmesan cheese.
Baking
  1. Cover with foil and bake for 30 minutes.
  2. Remove foil and bake an additional 25–30 minutes until golden and bubbly.
  3. Let rest for 10 minutes before serving.
  4. Garnish with fresh parsley if desired.

Notes

For best flavor, don't skip toasting the garlic and consider using other cheeses like Gruyere or adding crisped bacon or ham between the layers.