JB's Mushroom Tart
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JB's Mushroom Tart

A savory French tart featuring sautéed mushrooms and Gruyère cheese atop buttery puff pastry, finished with fresh thyme and a drizzle of truffle oil.

FrenchOmnivoreLunchThanksgiving
By Mike
20 minPrep
40 minCook
60 minTotal
4Servings
350Calories

Ingredients

  • Butter Puff Pastry1 square sheet
  • Extra Virgin Olive Oil1 tbsp
  • Unsalted butter2 tbsp, melted
  • Swiss Brown Mushrooms400g, sliced
  • Cooking Salt1/2 tsp
  • Black Pepper1/4 tsp
  • Gruyere Cheese1 1/2 cups, grated
  • Fresh Thyme Leaves1 1/2 tsp
  • Sea Salt Flakes1 pinch
  • Truffle Oilto drizzle (optional)

This Mushroom Tart is a delightful dish that marries the rich flavors of sautéed mushrooms with the nutty depth of Gruyère cheese all encased in a flaky puff pastry. The combination of textures and tastes makes it an elegant choice for lunch or a light dinner. The tart is not only easy to prepare but also looks stunning when served, making it perfect for entertaining guests or enjoying a cozy meal at home.

The cooking process begins by sautéing Swiss brown mushrooms until they are soft and flavorful. A bit of butter and olive oil enhances their richness. The puff pastry serves as a base that perfectly holds the mushroom filling, creating a satisfying crunch when baked. It’s essential to preheat your baking tray to ensure the pastry cooks evenly and achieves that golden-brown finish.

Finishing touches like fresh thyme leaves and a sprinkle of sea salt flakes elevate the dish further, while a drizzle of truffle oil adds a luxurious finish that is optional but highly recommended. This tart can be served warm and pairs beautifully with a fresh salad or a glass of white wine.

For storage, leftovers can be kept in the refrigerator and reheated in the oven to restore the pastry's crispness. This dish can also be made ahead of time and baked just before serving, making it a versatile option for meal prep or gatherings.

Instructions

  1. Preheat the oven

    5 min

    Place a baking tray in the oven and preheat it to 210°C (410°F) or 190°C (fan). This ensures the tart gets a nice crisp base while baking.

  2. Cook the mushrooms

    5 min

    In a frying pan over medium-high heat, combine olive oil and unsalted butter. Add sliced Swiss brown mushrooms, salt, and pepper. Sauté for about 5 minutes until they are softened, stirring regularly. Drain excess liquid in a colander over a bowl.

  3. Prepare the pastry base

    5 min

    On a clean surface, lay out a sheet of baking paper. Place the puff pastry on top, folding a 1 cm (0.4") border around the edges. Brush the border with melted butter to help it brown nicely during baking.

  4. Assemble the tart

    5 min

    Evenly spread the grated Gruyère cheese across the pastry base, then layer the sautéed mushrooms on top, ensuring even coverage.

  5. Bake the tart

    30 min

    Carefully lift the baking paper with the assembled tart onto the hot tray in the oven. Bake for about 30 minutes, or until the pastry is golden brown and crisp.

  6. Finish and serve

    5 min

    Once baked, remove from the oven and sprinkle with fresh thyme leaves and a pinch of sea salt flakes. Drizzle with truffle oil or extra virgin olive oil if desired. Cut into slices and serve hot.

FAQ

Yes, you can substitute Gruyère with other cheeses like cheddar or fontina, but the flavor will change.

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