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–+ servings

Quiche in a Sweet Potato Crust

Thin slices of sweet potato replace the usual pastry crust, then get loaded with sautéed onion, baby spinach, fluffy eggs, and salty feta for a quiche that looks suspiciously fancy for how simple it is. It’s colorful, satisfying, and proof that pie dough can take the morning off without ruining brunch.
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Prep Time 10 minutes
Cook Time 1 hour 5 minutes
Course Breakfast, Brunch
Servings 6

EQUIPMENT (PAID LINKS)

Ingredients
  

  • 2 medium sweet potatoes
  • Cooking spray as needed
  • 1 teaspoon oil
  • ½ onion thinly sliced
  • 1 bag baby spinach
  • ½ cup milk
  • ½ teaspoon kosher salt
  • ¼ teaspoon red pepper
  • 4 large eggs
  • ¼ teaspoon black pepper
  • 2 large egg whites
  • 1½ ounces feta cheese crumbled

Instructions

  • Prepare Sweet Potatoes: Peel the sweet potatoes and trim off the ends. Use a mandoline slicer to cut the sweet potatoes into thin, even rounds.
  • Prepare the Pie Dish: Coat the pie dish evenly with cooking spray. Arrange overlapping sweet potato rounds across the bottom of the dish.
  • Build the Crust: Cut some of the sweet potato rounds in half. Arrange the half-rounds around the sides of the pie dish, overlapping them slightly to form the edge of the crust.
  • Bake the Crust: Bake the sweet potato crust at 350°F for 20 minutes.
  • Heat the Oil: While the crust bakes, add 1 teaspoon oil to a skillet and heat it over medium heat.
  • Cook the Onion: Add the sliced onion to the skillet and cook over medium heat for about 4 to 5 minutes, stirring occasionally, until softened.
  • Wilt the Spinach: Add the baby spinach to the skillet. Cook for about 2 to 3 minutes, stirring frequently, until the spinach is wilted and combined with the onion.
  • Start the Egg Mixture: Pour the milk into a large mixing bowl. Add the kosher salt and red pepper.
  • Add the Eggs: Add the 4 large eggs, black pepper, and 2 egg whites to the bowl.
  • Whisk the Filling: Whisk the milk, eggs, egg whites, and seasonings together until evenly combined.
  • Increase the Oven Temperature: After removing the baked sweet potato crust from the oven, increase the oven temperature to 375°F.
  • Fill the Crust: Spoon the cooked onion and spinach mixture evenly into the sweet potato crust.
  • Add the Egg Mixture: Pour the egg mixture evenly over the spinach and onion filling.
  • Add the Feta: Sprinkle the crumbled feta cheese evenly over the top.
  • Bake the Quiche: Bake at 375°F for 35 minutes, or until the egg filling is set and the top is lightly browned.
  • Slice and Serve: Let the quiche settle briefly after baking, then cut it into wedges and serve.