Foryoueats: Apple Turnovers

1 lb puff pastry, (2 sheets) thawed according to package instructions

1 Tbsp all-purpose flour, for dusting

1 1/4 lb Granny Smith apples, (3 medium) peeled, cored, and diced into 1/3" thick pieces

1 Tbsp unsalted butter

1/4 cup brown sugar, lightly packed

1/2 tsp ground cinnamon

1/8 tsp salt

1 egg+ 1 Tbsp water for egg wash

1/2 cup powdered sugar

1-2 Tbsp heavy whipping cream

Apple Turnovers