Caramelized Onion Bacon Quiche (Printable)

Flaky pastry tart featuring caramelized onions, smoky bacon, and smooth custard. Perfect for brunch or light meals.

# Ingredient List:

→ Pastry

01 - 1 sheet (approximately 8.8 oz) store-bought or homemade shortcrust pastry

→ Filling

02 - 7 oz smoked bacon, diced
03 - 3 large yellow onions, thinly sliced
04 - 2 tablespoons unsalted butter
05 - 1 tablespoon olive oil
06 - 1 teaspoon sugar
07 - 1/2 teaspoon salt
08 - 1/4 teaspoon black pepper
09 - 1/4 teaspoon dried thyme

→ Custard

10 - 3 large eggs
11 - 3/4 cup heavy cream
12 - 1/2 cup whole milk
13 - 1/4 teaspoon ground nutmeg
14 - 2.8 oz grated Gruyère or Swiss cheese
15 - Salt and pepper to taste

# Steps:

01 - Preheat oven to 350°F. Roll out pastry and line a 9-inch tart pan. Trim excess and prick the base with a fork. Refrigerate while preparing the filling.
02 - In a large skillet over medium heat, cook bacon until crisp. Remove with a slotted spoon, drain on paper towels, and set aside.
03 - Discard excess bacon fat, leaving about 1 tablespoon. Add butter and olive oil to the pan. Add onions, sugar, salt, and thyme. Cook over medium-low heat, stirring occasionally, for 25 to 30 minutes until onions are deeply golden and caramelized. Remove from heat and let cool slightly.
04 - In a bowl, whisk together eggs, cream, milk, nutmeg, and a little salt and pepper until well combined.
05 - Scatter the caramelized onions and bacon evenly over the chilled pastry base. Sprinkle with grated Gruyère. Pour the custard mixture gently over the filling.
06 - Bake for 35 to 40 minutes, or until the quiche is set and lightly golden. Let cool 10 minutes before slicing.
07 - Serve warm or at room temperature.

# Expert Advice:

01 -
  • Flaky Texture: Uses a delicate shortcrust pastry base.
  • Sweet and Savory: Combines deeply caramelized yellow onions with salty smoked bacon.
  • Elegant Custard: Features a creamy mixture of eggs, heavy cream, and nutty Gruyère cheese.
02 -
  • Resting Time: Always let the quiche cool for 10 minutes before slicing to allow the custard to set.
  • Allergen Safety: This recipe contains eggs, milk, wheat (gluten), and pork. Always check labels if using store-bought pastry for hidden allergens.
  • Slow Cooking: Do not rush the onions; the full 25-30 minutes of low-heat cooking is essential for deep caramelization.
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