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Easy Cheesy Scalloped Potatoes

A rich and creamy cheesy scalloped potatoes recipe, similar to Potatoes Au Gratin, with layers of tender potatoes baked in a garlicky, cheesy cream sauce. This comfort food side dish is perfect for holidays or any family meal!
Prep Time10 minutes
Cook Time1 hour
Total Time1 hour 10 minutes
Course: Side Dish
Cuisine: American
Calories: 408kcal

Ingredients

  • 2 ½ pounds russet or Yukon gold potatoes thinly sliced (about 40 oz)
  • 3 tablespoons butter 1.5 oz
  • ½ onion chopped
  • 3 cloves garlic minced
  • 2 ½ cups heavy cream 20 oz
  • 3 tablespoons all-purpose flour 1.5 oz
  • Salt and pepper to taste
  • 1 teaspoon fresh thyme
  • ½ teaspoon cayenne pepper optional
  • 3 cups cheddar cheese grated (from a 12 oz block)
  • 1 tablespoon chives chopped (optional)

Instructions

Prepare the Potatoes

  • Peel the potatoes (optional) and slice them evenly to ⅛ to ¼-inch thick.

Make the Cheese Sauce

  • In a saucepan over medium heat, melt the butter.
  • Add the chopped onions and cook for 3 minutes, until softened.
  • Stir in the garlic and thyme and cook for 1 minute.
  • Sprinkle in the flour and stir to combine.
  • Slowly pour in the heavy cream, stirring constantly.
  • Add salt, pepper, thyme, and cayenne (if using).
  • Stir in 2 cups of shredded cheddar cheese until melted and smooth. Remove from heat.

Assemble the Dish

  • Preheat oven to 375°F (190°C) and grease a baking dish.
  • Layer half of the sliced potatoes in the bottom of the dish.
  • Pour half of the cheese sauce over the potatoes.
  • Sprinkle ½ of the remaining shredded cheese on top.
  • Repeat the layers with the remaining potatoes, cheese sauce, and cheese.
  • Garnish with chopped chives, thyme, or parsley.

Bake the Potatoes

  • Cover the dish with foil and bake for 40 minutes.
  • Remove the foil, sprinkle the remaining cheese on top, and bake for another 20 minutes, until golden brown and bubbly.

Serve & Enjoy

  • Let cool for a few minutes before serving. Garnish with additional chives, parsley, or thyme.

Notes

For extra creaminess: Swap half of the heavy cream with whole milk.
Add protein: Stir in cooked bacon or ham between the potato layers.
Make ahead: Assemble the dish up to 24 hours in advance and bake before serving.