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slice of savory sweet potato pie and tyhme on a plate.
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5 from 1 vote

Savory Sweet Potato Pie

Make our savory sweet potato pie with puff pastry, caramelized balsamic onions, and cheese – the perfect main dish for the holiday season.
Prep Time30 minutes
Cook Time50 minutes
Total Time1 hour 20 minutes
Course: Pies and Cheesecakes
Cuisine: American
Servings: 12 slices
Calories: 350kcal
Author: Adina

Equipment

Ingredients

  • 9 oz white or yellow onions 250 g
  • 9 oz red onions 250 g
  • 2 tablespoons extra virgin olive oil
  • ½ teaspoon dried thyme
  • 2 tablespoons sugar
  • 6 tablespoons balsamic vinegar
  • 1.3 oz sweet potatoes 600 g
  • ¾ cup Gruyere cheese or a vegetarian alternative 150 g (Note 1)
  • 10 oz puff pastry 275 g (Note 2)
  • 2 eggs
  • 1 cup heavy cream about 30% fat, 250 ml
  • fine sea salt and freshly ground black pepper

Instructions

  • Preheat the oven to 400°F/ 200°C. Line the springform with parchment paper.
  • Cook onions: Peel and slice the onions. Heat the olive oil in a large non-stick pan and saute the onions on medium-low heat until translucent and starting to get soft, about 8 minutes. Add the thyme, sugar, and balsamic vinegar and continue cooking the onions, stirring often, until the onions start to caramelize and are soft. Remove and let cool slightly while you prepare the rest.
    9 oz white or yellow onions/ 250 g + 9 oz red onions/ 250 g + 2 tablespoons extra virgin olive oil + ½ teaspoon dried thyme + 2 tablespoons sugar + 6 tablespoons balsamic vinegar
  • Prepare sweet potatoes and cheese: Peel and slice the sweet potatoes into thin slices with the help of a mandoline. Set aside. Grate the cheese and set it aside as well.
    1.3 oz sweet potatoes/ 600 g
  • Prepare pastry: Thaw it and roll it according to the packet's instructions if using frozen puff pastry. Place it in the prepared tin. Pierce the pastry with a fork all over.
    10 oz puff pastry/ 275 g
  • Assemble the pie: Divide the sweet potatoes into three even portions. Arrange one part of the potatoes into the baking dish and sprinkle generously with sea salt and black pepper. Cover with half of the onions and half of the grated cheese. Repeat with the second portion of sweet potatoes and the remaining onions and cheese. End with a layer of sweet potatoes.
    ¾ cup Gruyere cheese or a vegetarian alternative/ 150 g
  • Whisk the eggs and cream. Season well and pour the mixture into the gratin dish.
    2 eggs + 1 cup heavy cream/ 250 ml + fine sea salt and freshly ground black pepper
  • Bake for 50 minutes or until the sweet potatoes are cooked through. Loosely cover the pie with aluminum foil after about 30 minutes of baking time to prevent the top of the pie from getting too dark. Let the pie rest for about 10 minutes before serving.

Notes

  1. Cheese: Gruyere is a good melting cheese. You can substitute it with another kind of good melting cheese you like. If you want this pie to be vegetarian, make sure to choose a vegetarian type of cheese.
  2. Puff pastry: I use already rolled puff pastry found in the refrigerator section of the supermarket. You can use homemade puff pastry or frozen puff pastry, which should be thawed and rolled according to the packet's instructions.

Nutrition

Serving: 1slice | Calories: 350kcal | Carbohydrates: 29g | Protein: 8g | Fat: 23g | Saturated Fat: 9g | Polyunsaturated Fat: 13g | Cholesterol: 38mg | Sodium: 272mg | Fiber: 3g | Sugar: 9g