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This Mushroom Spinach Turkey Quiche transforms familiar Thanksgiving leftovers into a satisfying, savory meal with layers of comforting flavor.
Instead of a traditional pastry shell, prepared stuffing forms the crust, creating a hearty base with a tender interior and crisp, golden edges after baking.
The stuffing brings seasoned, savory character to every slice while making especially good use of leftovers.
Inside the crust, whisked eggs create a soft, set filling that holds together the diced turkey, earthy baby bella mushrooms, sautéed onion, garlic, and fresh spinach.
The mushrooms add a rich, savory bite, while the spinach brings a fresh vegetable element and soft texture.
Turkey makes the quiche more substantial, and grated Parmesan melts over the top for a lightly salty, cheesy finish.
The preparation is straightforward and practical.
The stuffing crust is briefly baked first so it can support the egg filling, while the vegetables are sautéed separately to soften them and develop their flavor.
Once combined with the eggs and turkey, the mixture is poured into the prepared crust and finished with Parmesan before going back into the oven.
With its combination of crisp stuffing, creamy baked eggs, tender vegetables, savory turkey, and Parmesan, this quiche is a convenient way to turn leftovers into a complete breakfast or brunch dish.
It can also be served as an easy lunch or dinner when you want something warm, filling, and simple to prepare.

Stuffing Crust Turkey Quiche
Ingredients
Equipment
Method
- Preheat the Oven: Preheat the oven to 375°F so it is ready for baking the stuffing crust.
- Form the Stuffing Crust: Press the 2 cups of prepared stuffing evenly into a 9-inch skillet or pie pan to create the crust.
- Par-Bake the Crust: Place the stuffing crust in the preheated oven and bake for 8–10 minutes.
- Prepare the Egg Mixture: Whisk the eggs, milk, kosher salt, and black pepper together in a large bowl until combined, then set aside.
- Heat the Oil: Warm the olive oil in a large skillet over medium heat.
- Sauté the Vegetables: Add the diced onion, sliced mushrooms, and minced garlic to the skillet and sauté for 4–5 minutes.
- Cook the Spinach: Add the fresh spinach and sauté for 2–3 minutes, or until the spinach has cooked down.
- Combine the Filling: Add the sautéed vegetable mixture to the egg mixture, then stir in the diced turkey until everything is evenly combined.
- Fill the Crust: Pour the egg, vegetable, and turkey mixture into the prepared stuffing crust, spreading it evenly.
- Add the Parmesan: Sprinkle the grated Parmesan cheese over the top of the filling.
- Bake the Quiche: Return the filled quiche to the oven and bake for 30–40 minutes, or until the egg filling has set.
Notes
- Use fully prepared stuffing as the crust so it can be pressed firmly into the 9-inch skillet or pie pan.
- The stuffing crust is baked for 8–10 minutes before the filling is added, helping it form a sturdy base.
- Sauté the mushrooms, onion, and garlic before combining them with the eggs to soften the vegetables and develop their savory flavor.
- Cook the spinach only until it has cooked down, which takes about 2–3 minutes.
- The quiche is ready when the egg filling has set after the final baking period.
- The recipe makes 6 servings and works especially well for using leftover cooked turkey and prepared stuffing.
Chef’s Secret
The most useful trick for this quiche is giving the stuffing crust its short pre-bake before adding the egg filling.
Press the stuffing firmly and evenly into the 9-inch skillet or pie pan, then bake it for the full 8–10 minutes specified in the recipe.
This creates a more stable foundation before the moist egg mixture is added.
For the filling, allow the mushrooms, onion, garlic, and spinach to cook as directed before combining them with the eggs.
This helps the vegetables become tender while allowing their savory flavors to blend with the turkey.
Once assembled, watch for the visual cue that matters most: the egg mixture should be set after the final 30–40 minutes of baking.
Serving Suggestions
Serve the quiche warm in wedges for breakfast, brunch, or a simple lunch. Its savory stuffing crust and turkey filling pair naturally with a fresh green salad or lightly dressed vegetables.
For a simple finishing touch, serve each slice with a little extra grated Parmesan if desired.
The quiche is also well suited to a holiday leftover spread alongside other prepared vegetables or simple breakfast sides.
Conclusion
This Mushroom Spinach Turkey Quiche turns leftover turkey and stuffing into a comforting, savory meal without requiring a traditional pastry crust.
The combination of seasoned stuffing, tender vegetables, eggs, turkey, and Parmesan creates satisfying flavor and texture in every slice.
With straightforward preparation and familiar ingredients, it is an easy way to give Thanksgiving leftovers a fresh purpose while making a hearty breakfast, brunch, lunch, or dinner.

