Preheat the oven to 400°F/200°C. Line two baking sheets with parchment paper.
Leave the skin on the nectarines, but remove and discard the pits. Chop them up small.
Add the diced nectarines to a mixing bowl along with the sugar, lemon juice, cornstarch and cinnamon. Toss gently to coat.
On a lightly floured surface, unfold each of the two puff pastry sheets. Cut each square into four squares, yielding a total of 8 squares.
Spoon approximately ⅓ cup of the nectarine mixture into the center of each square. Brush the edges of the pastry with beaten egg.
Fold each square in half diagonally to form a triangle, then press the edges to seal and crimp with a fork. Chill in the refrigerator for about 15 minutes, or until firm.
Cut two small slits into the top of each nectarine turnover, by poking them with a sharp knife.
Brush the top of each pastry with beaten egg, then sprinkle with the crystalised sugar.
Bake 18-20 minutes or until golden. Allow to cool slightly and serve warm or cold.
Notes
FAQs
Do you peel nectarines for baking? No. The skin softens and adds color.Why is my turnover leaking? You may have overfilled it or not sealed the edges tightly. Use egg wash to help seal.Can you use frozen nectarines? Yes, thaw and drain well first.How do you reheat turnovers? Warm in a 350°F oven for 5-8 minutes.What other fruits work in turnovers? Peaches, apples, berries, pears, or cherries.