Sweet Potato Gratin Recipe

This Sweet Potato Gratin is a delightful twist on the classic potato gratin, perfect for Thanksgiving or any special occasion. Layers of thinly sliced sweet potatoes are baked in a creamy, cheesy sauce infused with garlic and thyme, creating a savory-sweet dish that will wow your guests. This recipe serves 8-10 people.

Ingredients for Sweet Potato Gratin

  • 3 pounds sweet potatoes, peeled and thinly sliced
  • 2 cups heavy cream
  • 4 cloves garlic, minced
  • 2 tablespoons fresh thyme leaves, chopped
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 2 cups shredded Gruyere cheese
  • 1/2 cup grated Parmesan cheese
  • 2 tablespoons unsalted butter, cut into small pieces

How to Make Sweet Potato Gratin

  1. Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter.
  2. In a large saucepan, combine the heavy cream, minced garlic, chopped thyme, salt, and black pepper. Bring to a simmer over medium heat.
  3. Add the sliced sweet potatoes to the saucepan and cook for about 10 minutes, stirring occasionally, until the sweet potatoes are just tender.
  4. Remove the saucepan from the heat and stir in 1 1/2 cups of the shredded Gruyere cheese until melted and well combined.
  5. Transfer half of the sweet potato mixture to the prepared baking dish, spreading it out into an even layer.
  6. Sprinkle half of the remaining Gruyere cheese over the sweet potatoes.
  7. Repeat with the remaining sweet potato mixture and Gruyere cheese.
  8. Sprinkle the grated Parmesan cheese over the top of the gratin, then dot with the pieces of butter.
  9. Cover the baking dish with aluminum foil and bake in the preheated oven for 30 minutes.
  10. Remove the foil and bake for an additional 20-25 minutes, or until the top is golden brown and bubbly.
  11. Let the gratin cool for a few minutes before serving. Enjoy!

About the Main Ingredients

  • Sweet Potatoes: Rich in vitamins, minerals, and fiber, sweet potatoes are a nutritious alternative to regular potatoes. They add a natural sweetness and vibrant color to this dish.
  • Heavy Cream: Adds richness and creaminess to the gratin, making it indulgent and satisfying.
  • Garlic: Infuses the dish with a savory flavor that complements the sweetness of the potatoes.
  • Thyme: Adds an earthy, aromatic note that enhances the overall flavor profile of the gratin.
  • Gruyere Cheese: Melts beautifully and adds a nutty, slightly sweet flavor to the dish.
  • Parmesan Cheese: Adds a sharp, salty flavor and helps create a crispy, golden-brown crust on top of the gratin.
  • Butter: Adds richness and helps brown the top of the gratin.

This Sweet Potato Gratin is sure to be a hit at your next gathering. Its creamy, cheesy goodness pairs perfectly with a variety of main dishes, making it a versatile and delicious side dish.

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