Thin Apple Tarts

Directions

1. 1
   Cut apple halves crosswise into 1/16-inch-thick slices and transfer to a bowl.
2. 2
   Bring water, sugar, lemon juice, and butter to a boil in a small saucepan, stirring until sugar is dissolved, then pour over apples.
3. 3
   Turn apples until slightly wilted, then drain in a colander set over a bowl, reserving liquid.
4. 4
   Preheat oven to 425F.
5. 5
   Roll out pastry sheet on a lightly floured surface into a 121/2-inch square and cut out 4 (6-inch) rounds.
6. 6
   Transfer rounds to a lightly buttered baking sheet and top with overlapping apple slices.
7. 7
   Bake in middle of oven until golden brown, about 25 minutes.
8. 8
   Boil reserved liquid in saucepan until reduced to about 1/3 cup, then brush on baked tarts.