Thaw puff pastry according to package directions.
Roll out thawed pastry sheets to an 11" x 11" square. Mark off halfway points on each side. Use a ruler to connect opposite side marks and run a pizza cutter or knife along its edge to make cuts crosswise.
Place 2 heaping tablespoons of filling within each square.
Brush an egg wash( see below) on on 4 sides of each square then fold diagonally to opposite corners. Press edges to seal, then crimp with fork tongs.
Place the 8 turnovers onto a rimmed- baking sheet lined with parchment paper. cut 3 small slits on the top of each to vent. Chill in the refrigerator for at least 30 minutes.
Preheat oven to 400°F.
Brush tops of turnovers with the remaining egg wash. then place on a top middle rack for 20-22 minutes until pastry appears puffy and golden. Adjust time as needed according to your oven's tendancies.
Remove from oven to a cooling rack. Allow them to cool a bit before icing.