01 -
Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.
02 -
In a skillet, heat the olive oil and butter over medium-high heat. Add the finely chopped shallots and sauté until they become translucent, which should take about 2-3 minutes.
03 -
Add the minced garlic and continue to sauté for another minute until it's fragrant.
04 -
Now, toss in the finely chopped mushrooms and cook them until they release their moisture and become tender. Season with salt and pepper to taste. This process typically takes 5-7 minutes.
05 -
Once the mushroom and shallot mixture is cooked, remove it from the heat and let it cool slightly.
06 -
On a lightly floured surface, roll out the puff pastry sheet. Cut into squares or use a round cutter to create circles for your tart shells.
07 -
Place the cut pastry pieces onto the prepared baking sheet. If making traditional tarts, press the pastry into tart pans or create a border by folding over the edges slightly.
08 -
Spread a small amount of herbed goat cheese on each pastry piece, then top with the mushroom and shallot mixture.
09 -
Brush the exposed edges of the pastry with the beaten egg to help them turn golden brown during baking.
10 -
Bake in the preheated oven for 15-20 minutes, or until the pastry is puffed and golden.
11 -
Remove from the oven, garnish with fresh thyme leaves, and serve warm or at room temperature.