Crustless Spinach, Onion & Feta Quiche


This Crustless Spinach, Onion & Feta Quiche is a simple yet elegant dish that’s perfect for breakfast, brunch, or even a light dinner. By skipping the crust, you save time and calories while still enjoying all the rich, savory flavors of a traditional quiche. Packed with fresh spinach, caramelized onions, and tangy feta cheese, this recipe is as nutritious as it is delicious. Whether you’re cooking for one or feeding a crowd, this quiche is sure to become a go-to favorite. Let’s get baking!

Why You’ll Love This Recipe

  • No Crust, No Problem: Saves prep time and makes it gluten-free by default.
  • Packed with Flavor: The combination of spinach, sweet onions, and salty feta is irresistible.
  • Versatile: Serve warm, at room temperature, or chilled—perfect for any meal.
  • Meal Prep Friendly: Great for make-ahead breakfasts or lunches throughout the week.

Ingredients You’ll Need

  • 1 tbsp olive oil (or butter)
  • 1 medium onion, thinly sliced
  • 4 cups fresh spinach (or frozen spinach, thawed and drained)
  • 6 large eggs
  • 1 cup milk (whole milk or half-and-half for creaminess)
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 1/4 tsp nutmeg (optional, but adds warmth)
  • 1 cup crumbled feta cheese
  • 1/2 cup shredded mozzarella or cheddar cheese (optional, for extra cheesiness)

Step-by-Step Instructions

1. Preheat and Prep

  1. Preheat your oven to 375°F (190°C). Lightly grease a pie dish or 9-inch round baking pan with olive oil or cooking spray.

2. Caramelize the Onions

  1. Heat olive oil in a skillet over medium heat. Add the sliced onions and cook, stirring occasionally, for 10–12 minutes, until golden brown and caramelized.
  2. Add the spinach to the skillet and cook for another 2–3 minutes, until wilted. Remove from heat and let cool slightly.

3. Make the Egg Mixture

  1. In a large mixing bowl, whisk together the eggs, milk, salt, pepper, and nutmeg (if using) until smooth.
  2. Stir in the caramelized onions, spinach, feta cheese, and shredded cheese (if using).

4. Assemble and Bake

  1. Pour the egg mixture into the prepared baking dish, spreading it evenly.
  2. Bake for 30–35 minutes, or until the quiche is set in the center and lightly golden on top. To check for doneness, insert a knife or toothpick into the center—it should come out clean.