For the tart shells
01 -
1 sheet frozen puff pastry, thawed but cold
02 -
1 large egg
03 -
1 teaspoon water
04 -
All-purpose flour, for dusting
For the mushroom filling
05 -
1 tablespoon unsalted butter
06 -
1 tablespoon olive oil
07 -
2 medium shallots, finely chopped
08 -
8 oz (225 g) cremini mushrooms, thinly sliced
09 -
1 garlic clove, minced
10 -
1 teaspoon fresh thyme leaves
11 -
1 tablespoon chopped fresh parsley, plus more for garnish
12 -
1/2 teaspoon lemon zest
13 -
1/2 teaspoon kosher salt
14 -
1/4 teaspoon black pepper
15 -
4 oz (115 g) herbed goat cheese, softened and crumbled