If your puff pastry sheet is frozen, defrost it according to the package instructions.
Peel, core and very finely slice the apples (around ⅛ inch thick) with a sharp knife or mandoline. To keep the apples from browning you can submerge them in a bowl of water while you slice.
4 medium apples
Spread the pastry on a baking sheet lined with parchment paper and use a sharp knife to score a border inside the edge of pastry.
1 sheet (270 g) puff pastry
Arrange the apple slices overlapping on the pastry, leaving the border uncovered.
In a small pan, melt together the vegan butter and the sugar.With a silicone pastry brush, spread the melted butter and sugar all over the top of the apple slices.
2 tablespoons vegan butter, 2 tablespoons sugar
Bake at 400℉ / 200℃ for 30-40 minutes until the apples start to brown and the pastry is golden.
Remove from the oven and let the tart cool down for 5 minutes.
In the meantime, make the glaze by adding boiling water to the apricot preserves or jam until it reaches a thin spreadable consistency.With a silicone pastry brush, spread the glaze over the apples.
2 tablespoons apricot preserves or jam
Notes
Apples that are crisp and suitable for baking are best for this recipe, such as Braeburn, Honeycrisp or Golden Delicious. If you like it a bit more sour you can also use Granny Smith apples.Peeling is optional. Peeling the apples before slicing results in a smooth, almost creamy texture of the apple slices when cooked. It also makes it slightly easier to eat the apple tart. But if you don't mind or are in a hurry, you can leave the apples unpeeled.Baking time will vary depending on your oven and the apples. Aim for golden brown pastry and apples that are just starting to darken in colour. It's normal that the tart will look wet and possibly leak as the apple juices cook down.