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Savory Cauliflower and Red Onion Quiche

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A deliciously creamy quiche featuring roasted cauliflower and caramelized red onions in a buttery crust. Perfect for brunch, lunch, or a light dinner — rich, savory, and utterly satisfying.

Ingredients

  • Shortcrust Pastry: 1 sheet – provides a crisp, buttery base.
  • Cauliflower Florets: 2 cups – roasted to bring out sweetness and maintain texture.
  • Red Onion: 1 large – thinly sliced and caramelized for a mellow, sweet flavor.
  • Eggs: 4 large – the foundation of the creamy custard filling.
  • Heavy Cream: 1 cup – adds richness and silkiness to the quiche.
  • Whole Milk: 1/2 cup – lightens the custard without sacrificing flavor.
  • Grated Gruyère Cheese: 3/4 cup – melts beautifully with a nutty flavor profile.
  • Salt: 1 teaspoon – to season and enhance overall flavor.
  • Black Pepper: 1/2 teaspoon – adds gentle heat and aroma.
  • Nutmeg: A pinch – deepens the custard with warm spice.
  • Olive Oil: 1 tablespoon – for roasting and sautéing vegetables.

Instructions

  1. Preheat Your Equipment: Preheat oven to 400°F (200°C). Line a baking sheet with parchment.
  2. Combine Ingredients: Toss cauliflower with olive oil, salt, and pepper. Roast for 20 minutes until tender and golden.
  3. Prepare Your Cooking Vessel: In a skillet, sauté red onions in olive oil for 10–15 minutes until caramelized.
  4. Assemble the Dish: Line tart pan with pastry, prick with fork, blind bake at 375°F (190°C) for 10 minutes, then 5 minutes more without weights.
  5. Cook to Perfection: In a bowl, whisk eggs, cream, milk, salt, pepper, and nutmeg. Add roasted cauliflower, onions, and cheese to crust, pour over custard.
  6. Finishing Touches: Bake for 35–40 minutes until golden and just set. Cool for at least 15 minutes.
  7. Serve and Enjoy: Slice and serve warm or at room temperature with a fresh salad.

Notes

  • Roast vegetables ahead for quicker assembly.
  • Let quiche rest before slicing for cleaner portions.
  • Use full-fat dairy for best texture and richness.
  • Customize with your favorite cheeses or herbs.