Two-Toned Scalloped Potatoes

Active Time: 20 Mins
Total Time: 1 Hour
Yield: Serves 10 to 12

Using both sweet potatoes and Yukon gold potatoes gives classic, comforting scalloped potatoes a delicious upgrade. Perfect for family gatherings and holiday dinners at any point in the year, this impressive potato side dish delivers creamy richness, robust savory flavor, and a delightful crunch with a herby panko-pecan topping. You can assemble the dish (minus the topping) ahead of time and refrigerate up to 12 hours before you’re ready to bake. 


  • 1 1/2 pounds Yukon Gold potatoes
  • 1 1/2 pounds sweet potatoes
  • 2 cups heavy cream
  • 2 tablespoons all-purpose flour
  • 3 teaspoons fresh thyme, chopped
  • 2garlic cloves, chopped (1 to 1 1/2 tablespoon)
  • 1/4 cup plus 1 tablespoon unsalted butter, divided
  • 2 teaspoons table salt, divided
  • 1 teaspoon black pepper
  • 2 tablespoons fresh flat-leaf parsley, chopped
  • 1 tablespoon fresh rosemary, chopped
  • 6 ounces Gruyère cheese, shredded with large grate (about 1 1/2 cups)
  • 1/2 cup panko (Japanese-style breadcrumbs)
  • 1/3 cup pecans, chopped
  • 1 teaspoon lemon zest (from 1 lemon)

How to Make It

Step 1

Preheat your oven to 400°F. Lightly coat a 2- to 3-quart baking dish with cooking spray.

Step 2

Peel potatoes and place them in a bowl of cold water. Using a mandoline, slice potatoes into 1/8-1/4 inch rounds. Return slices to cold water until ready to use.

Step 3

Stir together heavy cream, flour, thyme, garlic, 1/4 cup of the butter, and 1 teaspoon of the salt in a medium sauce pan over medium. Bring just to a boil; remove from heat.

Step 4

Combine pepper and remaining 1 teaspoon salt in a small bowl. Combine chopped parsley and rosemary in a second small bowl. 

Step 5

Drain sliced potatoes, and pat dry. Place half of the potato slices evenly into prepared baking dish. Sprinkle with 1 tablespoon of the chopped herbs, half of the salt-pepper mixture, and half of the cheese. Repeat process with remaining half potato slices, 1 tablespoon of the herbs, remaining salt-pepper mixture and cheese. Pour cream mixture evenly over potatoes. Cover with aluminum foil, and bake in preheated oven 25 minutes.

Step 6

Stir together panko, pecans, lemon zest, and remaining 1 tablespoon herbs and 1 tablespoon melted butter in a small bowl until combined well. Uncover potatoes; sprinkle evenly with panko mixture. Bake another 20 to 25 minutes, or until topping is golden and mixture is bubbling. Let stand 10 to 15 minutes before serving.

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