Easy Blueberry Turnovers are made with puff pastry and a sweet blueberry filling. Light, flaky and simple to make, this recipe is perfect for breakfast or dessert!
Preheat oven to 400°F. Line a large baking pan with parchment paper. Set aside.
In a small saucepan, add blueberries and sugar and stir to combine. Cook over medium heat until blueberries start to burst and thicken slightly, about 5-6 minutes. Remove from heat and stir in cornstarch and lemon juice (if using). Set aside to cool slightly.
Lightly flour a cutting board or other flat surface; or line your counter with a sheet of parchment paper. Gently unfold both puff pastry sheets onto surface. Use a rolling pan to flatten a bit more, if needed. Cut each sheet into four squares. Place 1-2 tablespoons of filling onto the center of each square.
In a small bowl, whisk egg and water together. Using a pastry brush, brush a 1/2 inch border along the edges of each square.
Fold the opposite ends of each square together to form a triangle and press edges tougher to seal. Brush remaining egg wash over the tops of each pastry. Using a fork, poke the tops of each pastry once to allow steam to escape.
Bake for 15-20 minutes, or until turnovers are golden brown. Remove from oven and allow to completely before glazing.
To prepare glaze, whisk powdered sugar, vanilla, and milk in a small bowl. Drizzle over cooled turnovers.
Notes
Turnovers will last in an airtight container for up to four days.
See my tips and tricks for making these Easy Blueberry Turnovers above the recipe box.