✓ Preheat the oven to 200°C / 400°F.

✓ Roll each puff pastry sheet on a lightly floured surface to a ¼‑inch thickness.

✓ Cut the pastry into 4‑inch squares using a sharp knife.

✓ Combine chopped fruit, sugar, and cinnamon in a bowl; stir until the fruit is lightly coated.

✓ Whisk the egg in a small cup to create an egg wash.

✓ Place a spoonful of fruit mixture in the center of each pastry square.

✓ Fold opposite corners together to form a triangle, pressing edges gently to seal.

✓ Brush the top of each pastry with the egg wash.

✓ Arrange the pastries on a parchment‑lined baking sheet, leaving space between them.

✓ Bake for 12–15 minutes until the pastry is puffed and golden brown.

✓ Remove the pastries from the oven and let them cool on a wire rack for 5 minutes.

✓ Sift powdered sugar over the warm pastries for a delicate dusting.

✓ Plate the pastries on a serving platter, optionally adding a dollop of whipped cream or a drizzle of vanilla sauce.