Ultimate Spinach and Mushroom Tart Recipe (Easy & Flaky)

If you are looking for a comforting, elegant, and crowd-pleasing meal that comes together without hassle, this spinach and mushroom tart recipe is about to become your new favorite. Featuring a buttery, flaky crust, tender garlic-sautéed mushrooms, and fresh spinach enveloped in a rich, cheesy custard, every single slice delivers pure savory perfection.

Whether you’re hosting a weekend brunch, packing a light lunch, or serving a quick weeknight dinner with a crisp side salad, this spinach and mushroom tart recipe hits all the right notes. It is nutritious, versatile, and deceptively easy to make from scratch. Read on to master the step-by-step techniques that guarantee a perfectly crisp bottom crust every single time without any sogginess.

Why You’ll Love This Spinach and Mushroom Tart Recipe

• Ultra-Crispy Crust: Par-baking ensures a golden, flaky base that holds up under rich, savory filling.
• Deep Earthy Flavors: Sautéing the mushrooms in butter and garlic caramelizes their edges for maximum savory flavor.
• Simple Weeknight Prep: Takes just 20 minutes of active prep time using simple, wholesome ingredients.
• Meal-Prep Friendly: Tastes equally delicious warm out of the oven, at room temperature, or reheated the next day.
• Highly Customizable: Easily adapt the cheeses or herbs to suit whatever you have in your fridge.

Ingredients for the Spinach and Mushroom Tart Recipe

For the Crust & Filling:

• 1 pre-made pie crust (or homemade shortcrust pastry)
• 14 oz (400g) cremini or button mushrooms, sliced
• 10 oz (300g) fresh baby spinach
• 2 cloves garlic, minced
• 1 tbsp extra-virgin olive oil
• 1.5 tbsp unsalted butter

For the Custard:

• 3 large eggs
• 3/4 cup (180ml) heavy cream
• 1/2 cup (120ml) whole milk
• 1 cup (100g) Gruyère or Swiss cheese, shredded
• 1/4 tsp freshly grated nutmeg
• 1/2 tsp kosher salt
• 1/4 tsp freshly cracked black pepper

Ingredient Notes & Substitutions

• Mushrooms: Cremini (Baby Bella) mushrooms offer a deeper, woodsy flavor, but white button mushrooms or wild mushrooms work wonderfully.
• Spinach: Fresh baby spinach is ideal. If using frozen spinach, thaw 7 oz completely and squeeze out all excess moisture using a clean kitchen towel.
• Cheese Swaps: Gruyère delivers classic nutty richness, but sharp cheddar, goat cheese, or feta cheese add fantastic tangy flavor profiles to this spinach and mushroom tart recipe.
• Gluten-Free & Dairy-Free: Use a gluten-free pie shell and substitute heavy cream with unsweetened coconut cream or oat milk cream.

How to Make This Spinach and Mushroom Tart Recipe (Step-by-Step)

1. Par-bake the crust to perfection

Preheat your oven to 375°F (190°C). Unroll your pie dough into a 9-inch tart pan with a removable bottom, gently pressing it into the fluted edges. Prick the bottom all over with a fork. Line with parchment paper, fill with pie weights or dried beans, and bake for 12 minutes. Remove weights and parchment, then bake for an additional 5 minutes until lightly set.

Pro tip: Par-baking (or blind baking) sets the crust barrier, ensuring your spinach and mushroom tart recipe yields a crispy, flaky crust rather than a soggy bottom.

2. Sauté the garlic mushrooms and spinach

Heat olive oil and butter in a large skillet over medium-high heat. Add sliced mushrooms in a single layer and cook undisturbed for 4 minutes until golden brown, then stir and cook 3 minutes more. Add minced garlic and fresh baby spinach. Toss constantly for 2–3 minutes until the spinach wilts completely. Season with salt and pepper, then transfer to a strainer to drain any excess liquid.

Pro tip: Letting cooked mushrooms and spinach drain for 5 minutes prevents excess moisture from diluting your savory custard.

3. Whisk the rich egg custard

In a medium bowl, whisk together eggs, heavy cream, whole milk, grated nutmeg, salt, and black pepper until completely smooth. Fold in half of the shredded Gruyère cheese.

4. Assemble the tart

Spread the sautéed mushroom and spinach mixture evenly across the par-baked tart crust. Pour the egg custard mixture over the vegetables, allowing it to settle into all the crevices. Top with the remaining shredded cheese.

5. Bake until golden and set

Bake at 350°F (175°C) for 30 to 35 minutes, or until the center is set and the top turns a light golden brown. Cool on a wire rack for 10–15 minutes before slicing.

Expert Tips for Perfect Results

1. Don’t Crowd the Mushroom Pan: Sauté mushrooms in batches if your skillet is small so they brown instead of steam.
2. Cool the Vegetables Before Filling: Adding piping hot vegetables directly to raw eggs can cause the eggs to scramble prematurely.
3. Use Fresh Nutmeg: Freshly grated nutmeg lifts the earthy flavors of spinach and mushrooms significantly more than pre-ground nutmeg.
4. Bake on a Lower Oven Rack: Position your baking sheet on the bottom third of the oven to concentrate heat beneath the bottom crust.
5. Rest Before Slicing: Allowing the tart to rest for 15 minutes helps the custard set cleanly into beautiful, presentable slices.

Common Mistakes to Avoid

• Skipping the Blind Bake: Pouring wet custard straight into unbaked dough guarantees a soggy bottom crust.
• Using Un-drained Vegetables: Spinach holds a massive amount of water; failing to drain it dilutes the filling’s flavor and texture.
• Overbaking the Custard: Baking too long causes the egg mixture to curdle and lose its velvety creaminess.

Variations & Flavor Ideas

• Goat Cheese & Caramelized Onion: Layer sweet caramelized onions and crumbles of creamy goat cheese under the mushrooms.
• Savory Bacon & Herb: Crisp up 4 strips of chopped bacon and fold them into the mushroom mixture for a smoky touch.
• Sun-Dried Tomato & Feta: Mix in 1/4 cup of chopped sun-dried tomatoes and tangy feta for a Mediterranean flavor twist.

What to Serve With It

• Simple Green Salad: Toss mixed baby greens with lemon juice, olive oil, and shaved Parmesan.
• Roasted Asparagus or Tomatoes: Serve alongside garlic-roasted cherry tomatoes for a bright color contrast.
• Fresh Fruit Salad: Pair with fresh berries or melon slices for a balanced brunch spread.

Storage, Make-Ahead & Reheating

• Refrigerator Storage: Store leftovers wrapped tightly in foil or in an airtight container for up to 4 days.
• Freezer Instructions: Wrap individual baked slices in plastic wrap and foil; freeze for up to 2 months. Thaw overnight in the fridge before reheating.
• Reheating Method: Reheat slices on a parchment-lined baking sheet at 325°F (165°C) for 10–12 minutes until warmed through and crisp. Avoid microwaving to prevent a rubbery crust.

Frequently Asked Questions

Final Thought

This easy spinach and mushroom tart recipe brings restaurant-quality flavor straight to your dining table. With simple ingredients and straightforward steps, it proves that homemade savory baking can be both effortless and impressive. Try making it this week, and don’t forget to leave a review, rate the recipe below, or tag us on social media with your delicious creations!

3. RECIPE CARD DATA

• Recipe Name: Spinach and Mushroom Tart
• Short Description: A savory vegetarian tart filled with garlic-sautéed mushrooms, fresh spinach, and rich Gruyère custard inside a flaky crust.
• Prep Time: 20 mins
• Cook Time: 45 mins
• Total Time: 1 hr 5 mins
• Servings: 6
• Course: Main / Brunch
• Cuisine: American / French-inspired