Apple Turnovers

•  1/3 cup sugar
• 1 tablespoon all-purpose flour
• 1/2 teaspoon ground cinnamon
• 4 cups chopped, peeled apples
• 1 package (17.3 ounces) frozen puff pastry, thawed
• topping:
• 3 tablespoons butter, melted
• 2 tablespoons sugar
• 1/4 teaspoon ground cinnamon
• Vanilla ice cream, optional

1. Preheat oven to 400. In a large bowl, combine the sugar, flour, and cinnamon; add apples and toss to coat. On a lightly floured surface, roll out each pastry sheet into a 12-in. square. 
2. Cut each into 4 squares.
3. Spoon 1/2 cup of the apple mixture into the center of each square; fold diagonally in half and press the edges to seal. 
4. Place on a parchment-lined baking sheet.
5. In a small bowl, combine the butter, sugar, and cinnamon; brush over the pastry. 
6. Bake until golden brown, 12-16 minutes. 
7. If desired, serve warm with ice cream.