This Low Carb Spinach Mushroom Feta Crustless Quiche is a delicious and nutritious dish that’s perfect for breakfast, brunch, or even a light dinner. Packed with protein, fresh vegetables, and creamy feta cheese, this quiche is both satisfying and easy to make. Plus, it’s completely crustless, making it a great low-carb and gluten-free option!
Why You’ll Love This Recipe
- Low Carb & Gluten-Free: A healthy alternative without sacrificing flavor.
- Simple & Quick: Easy prep and hands-off baking time.
- Versatile: Enjoy it warm or cold, and perfect for meal prep.
- Rich & Creamy: The combination of eggs, heavy cream, and feta cheese gives it an irresistible texture.
Ingredients
- 1 tablespoon olive oil
- 1 small onion, finely chopped
- 2 cups fresh spinach, chopped
- 1 cup mushrooms, sliced
- 4 large eggs
- 1 cup heavy cream
- 1/2 cup crumbled feta cheese
- Salt and pepper to taste
- 1/2 teaspoon garlic powder
- 1/4 teaspoon nutmeg
Step-by-Step Instructions
1. Preheat the Oven
Preheat your oven to 375°F (190°C). Lightly grease a 9-inch pie dish or quiche pan.
2. Sauté the Vegetables
- In a medium skillet, heat olive oil over medium heat.
- Add the chopped onion and cook until translucent, about 5 minutes.
- Stir in the mushrooms and cook until tender and the moisture has evaporated, about 7-10 minutes.
- Add the chopped spinach and cook until wilted, about 2-3 minutes.
- Remove from heat and set aside to cool slightly.
3. Prepare the Egg Mixture
- In a large mixing bowl, whisk together eggs, heavy cream, garlic powder, nutmeg, salt, and pepper until well combined.
- Fold in the cooked vegetables and crumbled feta cheese, stirring gently.
4. Assemble and Bake
- Pour the egg mixture into the prepared pie dish.
- Bake in the preheated oven for 35-40 minutes, or until the quiche is set and the top is golden brown.
5. Cool and Serve
- Allow the quiche to cool for a few minutes before slicing and serving.
- Enjoy warm or chilled for a tasty, satisfying meal!

Pro Tips for the Best Crustless Quiche
- Use Fresh Ingredients: Fresh spinach and mushrooms enhance the flavor and texture.
- Don’t Overbake: The quiche is done when the center is just set and slightly jiggly.
- Let It Rest: Cooling for a few minutes makes slicing easier.
- Make It Your Own: Add other cheeses, herbs, or veggies like bell peppers or tomatoes for extra variety.
What to Serve with Spinach Mushroom Feta Quiche
- Fresh Salad: A light side salad with lemon vinaigrette pairs perfectly.
- Avocado Slices: Adds healthy fats and a creamy texture.
- Low-Carb Toast: Enjoy with a slice of keto-friendly bread.
Storing and Reheating Leftovers
- Refrigerate: Store leftovers in an airtight container for up to 3 days.
- Reheat in the Oven: Warm at 350°F (175°C) for 10-15 minutes.
- Reheat in the Microwave: Heat in 30-second intervals until warmed through.
- Freezing: You can freeze individual slices for up to 2 months. Thaw overnight in the refrigerator and reheat as needed.

Low Carb Spinach Mushroom Feta Crustless Quiche
- Total Time: 50-55 minutes
- Yield: Servings: 6
Description
This Low Carb Spinach Mushroom Feta Crustless Quiche is a delicious and nutritious dish that’s perfect for breakfast, brunch, or even a light dinner. Packed with protein, fresh vegetables, and creamy feta cheese, this quiche is both satisfying and easy to make. Plus, it’s completely crustless, making it a great low-carb and gluten-free option!
Ingredients
- 1 tablespoon olive oil
- 1 small onion, finely chopped
- 2 cups fresh spinach, chopped
- 1 cup mushrooms, sliced
- 4 large eggs
- 1 cup heavy cream
- 1/2 cup crumbled feta cheese
- Salt and pepper to taste
- 1/2 teaspoon garlic powder
- 1/4 teaspoon nutmeg
Instructions
1. Preheat the Oven
Preheat your oven to 375°F (190°C). Lightly grease a 9-inch pie dish or quiche pan.
2. Sauté the Vegetables
- In a medium skillet, heat olive oil over medium heat.
- Add the chopped onion and cook until translucent, about 5 minutes.
- Stir in the mushrooms and cook until tender and the moisture has evaporated, about 7-10 minutes.
- Add the chopped spinach and cook until wilted, about 2-3 minutes.
- Remove from heat and set aside to cool slightly.
3. Prepare the Egg Mixture
- In a large mixing bowl, whisk together eggs, heavy cream, garlic powder, nutmeg, salt, and pepper until well combined.
- Fold in the cooked vegetables and crumbled feta cheese, stirring gently.
4. Assemble and Bake
- Pour the egg mixture into the prepared pie dish.
- Bake in the preheated oven for 35-40 minutes, or until the quiche is set and the top is golden brown.
5. Cool and Serve
- Allow the quiche to cool for a few minutes before slicing and serving.
- Enjoy warm or chilled for a tasty, satisfying meal!
- Prep Time: 15 minutes
- Cook Time: 35-40 minutes