Peach Turnovers

Name: Peach Turnovers
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Cuisine: American
Ingredients: 1 lb chopped peaches (about 2 ½ cups); 1 tbsp fresh lemon juice; 2 tbsp salted butter; ¼ cup granulated sugar; 5 tbsp smoked sugar ((or turbinado sugar)); 2 tsp cornstarch; ½ tsp vanilla; ½ tsp cinnamon; flour (for dusting); frozen puff pastry (thawed according to package directions); 1 large egg (beaten with 1 tbsp water); 3 tbsp additional smoked sugar ( for topping (or turbinado sugar) )