Colorful Potatoes au Gratin

This recipe uses purple, sweet, and white potatoes to create a delicious side dish to bring a pop of color to your holiday table.



  • 1 sweet potato
  • 1 purple potato
  • 1 white potato
  • 1 tablespoon of butter
  • ¼ cup olive oil
  • 1 teaspoon of fresh parsley, chopped
  • 1 teaspoon of fresh chives, sliced thin
  • 2 teaspoons of fresh thyme, chopped
  • 2 teaspoons of garlic, grated
  • ¼ cup of heavy cream
  • 2 tablespoons of gruyere cheese, grated
  • 1 tablespoon of sharp cheddar cheese, grated
  • ½ teaspoon of salt
  • ¼ teaspoon of pepper


  1. Preheat the oven to 375°F.
  2. Use 1 tablespoon of butter to grease the All-Clad C2 Copper Oval au Gratin and set it aside.
  3. Using a mandolin slicer, slice the potatoes roughly 1/8 inch thick. This will ensure all of the potatoes are sliced to the same thickness.
  4. In a large mixing bowl, combine the herbs and toss to combine. Remove 1 teaspoon of the mixed herbs for garnish and reserve to the side.
  5. Pour the oil into the bowl with the herbs. Add the grated garlic and mix to combine.
  6. Add the potatoes to the mixing bowl and season with salt and pepper. Coat the potatoes with your mixture completely.
  7. Transfer the potatoes to your Oval au Gratin pan. Neatly line the pan with the potatoes and slightly overlap them as you go.
  8. In a separate bowl, combine the cheese with the heavy cream. Then pour it over the potatoes. Cover the pan with foil and bake in the oven for 35-40 minutes.
  9. After the covered baking time, remove the foil and place it back in the oven for 30 minutes or until golden brown on top.
  10. Remove the pan from the oven and let rest for 10 minutes before serving. Garnish with the reserved herbs and some flaky sea salt.

Pro Tip:

Using a mandolin slicer will ensure that your potatoes are uniformly sliced for even cooking and a beautiful presentation.


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