Mushroom Tart with Puff Pastry and Gruyère is an easy savory tart recipe that looks impressive but takes minimal effort. Golden sautéed mushrooms and melted Gruyère bake on a flaky puff pastry crust that works for weeknight dinners or appetizer boards.
1sheetPepperidge Farm puff pastry (about 9 x 10 inches)thawed
1cupGruyere cheeseshredded
12ouncesmushroomssliced
1tablespoonunsalted butter
1tablespoonolive oil
2 to 3sprigsfresh thyme
1clovegarlicminced
½teaspoonsaltor to taste
¼teaspoonblack pepperfreshly ground
1dashall-purpose flourfor dusting
1egg + a teaspoon of waterbeaten, for egg wash
Instructions
Thaw puff pastry in the refrigerator according to package directions.
Preheat oven to 400°F (200°C). Lightly dust a large sheet of parchment paper with flour. Unroll the puff pastry sheet and place it on the floured surface.
Using a knife or pizza cutter, gently score about ½ inch all the way around the edge of the pastry to create a border. Sprinkle the shredded Gruyere cheese evenly in the center, leaving the border clean.
Wipe the mushrooms clean. Heat the olive oil and butter in a large pan over medium-high heat. Add the mushrooms, cooking in batches if crowded, and sauté until golden and the pan looks dry, 8 to 10 minutes. Season with salt and pepper, then add the garlic and cook for 30 seconds.
Drain any excess liquid from the sautéed mushrooms. Spread them on top of the cheese. Transfer the pastry to a baking sheet. Brush the beaten egg wash along the border of the pastry.
Bake in the preheated oven for 20-25 minutes, or until the pastry is golden brown and puffed. Remove from the oven and top with fresh thyme sprigs.
Allow the tart to cool for a few minutes before cutting into pieces and serving warm.
Video
Notes
Cooking NotesCook the mushrooms until their liquid has evaporated and they're golden but still plump.Tips for Best Results
Keep the puff pastry cold until it goes into the oven so the butter layers puff up flaky.
Grate the Gruyère from a block so it melts smooth and creamy.
Brush the egg wash only on the border so the edges rise tall and crisp.
Let the tart rest for 5 minutes before cutting so the cheese sets and the slices hold their shape.
How to Know It’s ReadyThe edges are puffed and deep golden brown, and the cheese is melted and bubbling. Lift a corner with a spatula. The bottom should be golden and crisp, not pale.