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Sweet Potato Casserole with Hazelnut Streusel

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Sweet Potato Casserole with Hazelnut Streusel

Sweet Potato Casserole with Hazelnut Streusel

Created for the 3 1/10 qt. stoneware au gratin dish
Serves 12 – 14

Ingredients:

For the topping:
  • 1 1/4 cups all-purpose flour
  • 1/4 cup rolled oats
  • 1/2 cup finely chopped hazelnuts
  • 1/2 cup sugar
  • 1/4 cup brown sugar
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon ground cloves
  • 1/4 teaspoon salt
  • 8 tablespoons (1 stick) unsalted butter

For the filling:
  • 6 pounds sweet potatoes, roasted, peeled and pureed
  • 3 large egg yolks
  • 1 whole egg
  • 1 1/2 cups half-and-half
  • 1/3 cup maple syrup, plus more to taste
  • 1 teaspoon salt
  • 1/2 teaspoon ground nutmeg
  • 1 1/2 teaspoons ground cinnamon
  • 1 1/2 teaspoons vanilla extract
  • 3 tablespoons orange juice
  • 5 tablespoons unsalted butter, plus more for the baking dish
  • 1/2 teaspoon fresh cracked pepper

Directions:

Preheat oven to 375 F. Butter the gratin dish.

Prepare the streusel: Melt the butter and let it cool slightly. In a medium bowl, mix together all the dry ingredients for the topping with a fork. While stirring, slowly drizzle in the butter until you have uneven lumps and crumbs. Refrigerate for 15 minutes while preparing the potatoes.

Place the pureed sweet potatoes in a large bowl. Set aside.

In a medium bowl, whisk together egg yolks, whole egg and half-and-half until well-blended. Whisk in 1/3 cup maple syrup, salt, nutmeg, cinnamon, vanilla and orange juice.
Gently whisk the egg mixture into the potatoes until well-blended. Add butter and stir until smooth.

Taste for seasoning and sweetness. Adjust with the addition of a few more tablespoons of maple syrup, or salt and pepper.

Transfer the potato mixture to the gratin dish and smooth with a spatula.

Remove topping from refrigerator and crumble it over the potatoes.

Bake 20 minutes. Rotate the dish and bake another 20 – 25 minutes, until the top is crisp and browned. Let cool 15 minutes before serving.

Created For
Gratin
Main Ingredient
Potatoes
Cooking Time
Under 2 hrs.
Serving Size
10+