Green Bean and Mushroom Tart: Crispy, Creamy, and Elegantly Simple for the Holiday Table
There’s something effortlessly satisfying about a tart that brings together crisp golden pastry and a velvety, savoury filling — and this Green Bean and Mushroom Tart delivers exactly that. Imagine buttery puff pastry puffed to perfection, giving way to a creamy, herb-infused mushroom and green bean mixture that tastes like winter comfort and festive indulgence. It’s light enough to serve as a starter, elegant enough for Christmas dinner, and cosy enough for a Thanksgiving side. If you love dishes that look impressive but are secretly simple, this tart is absolutely your move.
And since we’re talking pastry, my cookbook “Everything Is Better with Puff Pastry” is coming out on December 2nd in the U.S., with the international release following just a few weeks later across the rest of the world. If you haven’t secured your copy yet, you can pre-order here — I know you’re going to love this book.
Inside, you’ll find a full collection of both savoury and sweet puff-pastry masterpieces, from elegant appetisers to hearty mains and show-stopping desserts. It’s filled with approachable, fuss-free recipes including tarts, pastries, rustic bakes, and special favourites like my Shallow Tart Tatin, along with clever techniques and flavour insights that highlight just how versatile puff pastry can be. And if tarts make your heart happy, don’t miss my Courgette and Sun-Dried Tomato Pesto Tart — simple, fresh, and absolutely irresistible.
Scroll down or tap ‘Jump to Recipe’ to go to the full printable recipe card with measurements.
Simple Ingredients, Elegant Flavours
This tart relies on humble ingredients that work beautifully together, each one bringing its own role in flavour and texture:
• Mushrooms – add earthy savouriness and depth, especially when cooked until golden.
• Green beans – bring freshness, colour, and a tender bite that lifts the filling.
• Shallot – provides a subtle sweetness that rounds out the vegetables.
• Garlic – adds aroma and warmth without dominating.
• Milk and flour – form a smooth, creamy base that binds the mixture.
• Puff pastry – crisp, buttery, and flaky; ready-rolled works well, but homemade is always special.
• Parmesan – finishes the tart with salty, nutty richness.
• Egg yolk + milk – give the pastry its golden, glossy surface.
Each ingredient remains simple, clean, and accessible — but when combined with the proper technique, the result is refined and deeply satisfying.
How to Make Green Bean and Mushroom Tart
Blanching the Beans
Start by bringing a pot of salted water to a boil and cooking the green beans for just two minutes. After that, drain them and immediately rinse with cold water — this stops the cooking process and keeps them crisp and bright. Set them aside until needed.
Cooking the Mushrooms
Meanwhile, heat the olive oil in a large 23 cm (9-inch) oven-safe pan over medium-low heat. Add the sliced mushrooms, season with salt and black pepper, and fry them gently, stirring occasionally, until they turn golden — about five minutes. Once they’ve picked up colour, add the shallot and minced garlic and cook for another two minutes, or until fragrant and softened.
Making the Creamy Filling
Next, sprinkle the flour directly over the vegetables and stir, cooking it off briefly to remove any raw taste. Gradually pour in the milk, stirring constantly so the mixture thickens into a smooth, creamy base — it should take around three minutes. Once the sauce has thickened, add the green beans back into the pan and mix to combine, adjusting seasoning if needed. Remove from the heat.
Preparing the Pastry
Preheat the oven to 190°C / 375°F, and line a baking tray with parchment paper. Roll out the puff pastry and cut a 25 cm (10-inch) round. Lay the pastry over the filled pan, tucking the edges down inside the rim so the filling is neatly enclosed. Use a knife to cut a small cross in the centre of the pastry — this helps steam escape while baking.
Baking
Whisk the egg yolk with 1 tablespoon of milk and brush this mixture evenly over the pastry. Transfer to the oven and bake for 25–28 minutes, or until the pastry is golden, crisp, and puffed.
Inverting and Serving
Once baked, remove from the oven and immediately cover the top of the pan with parchment and a board, then carefully flip the tart over so that the pastry is now on the bottom. If any filling sticks to the pan, simply lift it back into position. Finish with a sprinkling of Parmesan and serve warm.
Scroll down to the printable recipe card for precise measurements and the exact ingredient quantities.
Why We Love Green Bean and Mushroom Tart
This tart strikes that perfect balance between comfort and elegance — it feels indulgent, yet never heavy. The creamy mushroom filling brings warmth and depth, while the green beans add freshness and slight crunch, keeping the flavours bright. The puff pastry delivers that irresistible contrast: crisp and golden on the outside, soft and tender where it meets the filling. It’s the kind of dish that looks impressive when served, but is wonderfully approachable to make at home.
It also shines during the festive season, making it ideal for Thanksgiving and Christmas as a vegetarian-friendly option or a beautifully balanced starter on the holiday table. It brings that cosy, seasonal feel without being overly rich or heavy — just the right amount of comfort.
What makes this tart even more appealing is its adaptability. It’s just as welcome at a holiday feast as it is for brunch, a casual gathering, or even a light dinner served with a simple salad or a warm bowl of soup. And if you love cosy, comforting dishes that celebrate vegetables, you’ll also enjoy recipes like my Potato Tarts with Beetroot Feta & Avocado Salsa and Easy Mini Crushed Potato Tarts (Gluten Free), which celebrate vegetables in creative and delicious ways, each bringing colour, freshness, and bold flavour to the table.
Serving Suggestions
This tart shines when served warm, allowing the pastry to stay crisp and the filling silky and fragrant. It pairs beautifully with a simple salad of mixed greens with lemon vinaigrette, roasted vegetables, or even a bowl of light soup. On a festive table, it sits comfortably alongside heartier dishes — the rich roasts, gravies, potatoes, and winter sides — offering a lighter, fresher flavour that balances the meal rather than competing with it.
You can also slice it into smaller wedges and serve as an appetiser or a canapé-style nibble at a holiday gathering. Its elegant presentation makes it feel special, but its ease of preparation makes it something you’ll happily return to all season long.
Storing & Reheating
If you’re lucky enough to have leftovers, this tart stores beautifully. Simply let it cool to room temperature, then keep it in an airtight container in the fridge for up to 2 days. When ready to reheat, avoid the microwave — it softens the pastry. Instead, warm it in the oven at 160°C / 320°F for 5–6 minutes to restore the crispness of the pastry while gently heating the filling. The texture comes back perfectly and the flavours deepen even more the next day.
Instagram Tutorial & More
Watch our quick video on Instagram to see this tart come together step by step, and don’t miss our other easy and delicious puff pastry recipes — each one offering a new flavour experience and a different way to impress with minimal effort:
- Cheesy Pesto Puff Buns
- Tomato & Boursin Puff Tartlets
- Easy Puff Pastry Quiches
- Mini Pumpkin Pies
- Twisted Garlic Puffs
- Nutella Puff Pastry Twists
Happy baking,
Izabella xx
Scroll down or tap ‘Jump to Recipe’ to access the full printable recipe card with exact measurements and instructions.
Description
This Green Bean and Mushroom Tart is the definition of effortless elegance — buttery, crisp puff pastry on the outside with a rich, creamy, savoury mushroom and green bean filling inside. It’s simple to prepare, bakes up beautifully golden, and makes a perfect vegetarian side dish or starter for Thanksgiving, Christmas, or any winter gathering. Comforting, delicious, and guaranteed to impress.
Ingredients
Instructions
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Bring a medium pot of salted water to the boil. Add the green beans and cook for 2 minutes, then drain and rinse under cold water to halt the cooking. Set aside.
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Heat the olive oil in a large oven-safe 23 cm (9 inch) pan over medium-low heat. Add the mushrooms, season with salt and pepper, and cook for about 5 minutes, stirring occasionally, until golden. Add the shallot and garlic, cooking for a further 2 minutes until soft and aromatic. Sprinkle in the flour and cook for 1 minute, stirring to coat the vegetables. Gradually pour in the milk, stirring continuously until the sauce thickens, about 3 minutes. Add the green beans and toss to combine. Adjust seasoning as needed, then remove from the heat.
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Preheat the oven to 190°C / 375°F
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Roll out the puff pastry and cut a 25 cm (10 inch) round. Place the pastry over the pan, tucking in the edges to encase the filling. Using a sharp knife, cut a small cross in the centre of the pastry to allow steam to escape. Whisk together the egg yolk and 1 tbsp milk, then brush over the pastry. Bake for 25–28 minutes, or until the pastry is crisp and deeply golden.
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Remove from the oven, and run a knife or spatula around the edges. Place a sheet of parchment on top of the tart, cover with a board, and carefully invert so the pastry is on the bottom and the filling on top. If any vegetables cling to the pan, simply lift and set them back into place. Finish with a scattering of Parmesan and serve warm.
Nutrition Facts
Servings: 6 ServingCalories:380.11kcalTotal Fat:24.59gSaturated Fat: 6.67gTrans Fat: 0gCholesterol:28.71mgSodium:180.04mgPotassium:236.04mgTotal Carbohydrate:33gDietary Fiber: 2.1gSugars: 4.11gProtein:7.69gVitamin A: 36.13IUVitamin C: 4.41mgCalcium: 80.71mgIron: 2.11mgVitamin D: 0.6IUVitamin E: 0.61IUVitamin K: 20.56mcgThiamin: 0.3mgRiboflavin: 0.35mgNiacin: 3.44mgVitamin B6: 0.13mgFolate: 28.01mcgVitamin B12: 0.22mcgPhosphorus: 117.89mgMagnesium: 23.92mgZinc: 0.74mg
Note
- It’s always easier to work with chilled pastry. If your pastry becomes sticky or soft, place it in the fridge for 10–15 minutes to firm up. Cold pastry bakes up crispier with better lift and puff.
- When cooking the mushrooms, let them brown properly rather than steam. If they release too much water, continue cooking until dry and caramelised.
- The filling should be thick enough that you can drag a spatula through it and leave a brief trail. This is the ideal consistency before adding the beans.
- If the sauce thickens too fast, take it off the heat and whisk in an extra splash of milk. It should be creamy, not pasty.
- Don’t press the pastry too tightly onto the filling — you want slight lift and space for steam circulation.
- When inverting the tart, do it confidently in one smooth motion to keep the filling in place.
- Serve with a sprinkle of Parmesan for an elegant finish.
- Leftovers can be stored in the fridge in an airtight container for up to 2 days.
- Reheat in the oven at 160°C / 320°F for 5–6 minutes to restore crispness. Avoid microwaving, as it softens the pastry.
