Preheat oven to 350°F. Line a baking sheet with parchment paper.
Combine peaches, brown sugar, lemon juice, cornstarch, cinnamon, cloves, and salt in a bowl.
2 large fresh peaches, ¼ cup brown sugar, 1 tablespoon lemon juice, 1 tablespoon cornstarch, ½ teaspoon ground cinnamon, ⅛ teaspoon ground cloves, Pinch of salt
Roll out a sheet of puff pastry into an 11-inch square.
2 sheets puff pastry
Cut into four equal-sized squares.
Spoon ⅛ of the peach mixture onto one half of each square.
Whisk egg, and brush over edges of pastry dough.
1 large egg
Fold dough over from corner to corner, and press with a fork to seal.
Repeat with the second sheet of puff pastry.
Brush tops of turnovers with remaining eggs.
Place on a cookie sheet, and bake in preheated oven for about 20 minutes until golden brown.
When turnovers are finished baking, whisk powdered sugar, melted butter, and milk together and drizzle over turnovers. Let cool for at least 15 minutes before serving.
½ cup powdered sugar, 1 tablespoon salted butter, 2-3 teaspoons milk