Ingredients
Equipment
Method
Make the filling
- Melt the butter in a 10-inch skillet over medium heat.
- Add the apples, sugar, cornstarch, cinnamon, lemon juice, and salt. Cook, stirring often, for 5–7 minutes, until the apples are just tender and the juices are thickened.
- Transfer the filling to a bowl and cool completely, about 20–30 minutes.
Assemble and bake
- Heat the oven to 400°F.
- Line a large rimmed baking sheet with parchment paper.
- Unfold the puff pastry sheets on a clean work surface and cut each into 4 equal squares.
- Whisk the egg and water in a small bowl.
- Brush the edges of each pastry square with the egg wash.
- Spoon about 1/4 cup filling onto one half of each square, leaving a 1/2-inch border.
- Fold each square diagonally over the filling to form a triangle and press the edges together, then crimp with a fork.
- Arrange the turnovers on the baking sheet.
- Brush the tops with the remaining egg wash and cut 2 small vents in each.
- Bake for 20–25 minutes, until puffed and deep golden brown.
- Cool on the baking sheet for 10 minutes before serving.
Notes
For crispest pastry, serve soon after cooling. Refrigerate leftovers in an airtight container for up to 3 days; freezer: yes, freeze baked turnovers and reheat until crisp. For a dairy-free variation, use plant-based butter, dairy-free puff pastry, and a plant-based milk wash instead of the egg wash.
