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Caramelized Onion Quiche

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This caramelized onion quiche transforms humble onions into a sweet, savory, and creamy brunch centerpiece. With a flaky crust, rich custard, and melty cheese, it’s a comforting and crowd-pleasing dish perfect for any occasion.

Ingredients

Scale
  • 1 pre-made 9-inch pie crust (or homemade)
  • 3 large yellow onions, thinly sliced (about 2 lbs/900g)
  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 1/2 teaspoon sea salt
  • 1 teaspoon sugar (optional)
  • 4 large eggs
  • 1 cup heavy cream
  • 1/2 cup whole milk
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon ground nutmeg
  • 1 cup shredded Gruyère or Swiss cheese
  • 1/4 cup grated Parmesan cheese
  • Chopped fresh thyme or chives (optional)
  • Crispy cooked bacon or ham (optional)
  • Sautéed spinach, squeezed dry (optional)

Instructions

  1. Heat butter and olive oil in a large skillet over medium-low heat. Add sliced onions, sea salt, and sugar (if using). Cook, stirring often, for 30–40 minutes until onions are deep golden and jammy. If the pan gets dry, add a splash of water. Remove from heat and let cool slightly.
  2. If using a pre-made crust, thaw as directed. Press into a 9-inch pie dish, trim or crimp edges, and prick the bottom with a fork. For a crispier crust, blind bake at 375°F for 10–12 minutes with parchment and pie weights, then cool.
  3. In a mixing bowl, whisk together eggs, heavy cream, milk, black pepper, and nutmeg until smooth. Stir in shredded Gruyère and grated Parmesan (reserve some cheese for topping if desired). Fold in herbs, bacon, or spinach if using.
  4. Scatter caramelized onions evenly over the pie crust. Pour the egg and cheese mixture over the onions, spreading gently. Sprinkle reserved cheese and extra herbs on top. Place pie dish on a baking sheet.
  5. Bake at 375°F for 40–45 minutes, until the center is just set and the top is golden brown. Cover crust edges with foil if they brown too quickly. Cool for 15–20 minutes before slicing. Serve warm, at room temperature, or chilled.

Notes

For best results, caramelize onions slowly over low heat. Blind baking the crust helps prevent sogginess. Let the quiche rest before slicing for clean cuts. Customize with your favorite cheese, herbs, or add-ins like bacon or spinach. Quiche can be made ahead, refrigerated, or frozen for later.

Nutrition

Keywords: caramelized onion quiche, brunch, quiche recipe, vegetarian quiche, French quiche, easy quiche, onion tart, savory pie, make-ahead brunch, cheese quiche

Find it online: https://tastypierecipes.com/caramelized-onion-quiche-recipe-easy-homemade-brunch-in-5-steps/