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Asparagus & Caramelized Onion Brunch Quiche

A creamy, savory quiche filled with sweet caramelized onions, fresh asparagus, and melted cheese baked in a flaky golden crust.
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Prep Time 25 minutes
Cook Time 40 minutes
Total Time 1 hour 5 minutes
Servings: 6 slices
Course: Breakfast, Brunch
Cuisine: American, French-Inspired
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

Quiche Filling
  • 1 pie crust 9-inch
  • 2 yellow onions thinly sliced
  • 1 bunch asparagus trimmed and cut
  • 5 eggs large
  • 1 cup heavy cream
  • 0.5 cup whole milk
  • 1 cup Gruyère cheese shredded
  • 0.5 cup mozzarella cheese shredded
  • 1 tsp thyme fresh
  • 0.5 tsp salt
  • 0.5 tsp black pepper

Equipment

  • Mixing bowls
  • Skillet
  • Pie dish
  • Whisk

Method
 

  1. Preheat oven to 375°F (190°C). Blind bake pie crust for 10–15 minutes.
  2. Cook onions slowly in butter and olive oil until deeply caramelized.
  3. Sauté asparagus briefly until slightly tender.
  4. Whisk eggs, cream, milk, thyme, salt, and pepper.
  5. Spread onions and asparagus in crust, sprinkle cheese on top.
  6. Pour egg mixture over filling.
  7. Bake 35–40 minutes until set.
  8. Cool slightly before slicing and serving.

Notes

Let the quiche rest before slicing for the best texture.