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Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.

Prepare the blueberry filling: In a small saucepan, combine 1 1/2 cups of blueberries, brown sugar, and orange zest. Cook over medium heat for 5-7 minutes, stirring occasionally, until the blueberries soften and release their juices, and the mixture thickens slightly. Remove from heat and let cool slightly.

Prepare the cream filling: In a medium bowl, whisk together sour cream, 1/4 cup granulated sugar, 2 large eggs, and vanilla extract until smooth and well combined.

Unroll the thawed puff pastry sheet onto the prepared baking sheet. Using a sharp knife or pizza cutter, cut the pastry into a large rectangle (approximately 9x12 inches). Cut off any excess pastry to create a clean rectangle. Reserve the excess pastry for the lattice.

Spread the cream filling evenly over the puff pastry rectangle, leaving a 1/2-inch border around the edges.

Spoon the cooled blueberry filling over the cream filling.

From the reserved puff pastry scraps, cut thin strips (about 1/2-inch wide). Arrange these strips in a lattice pattern over the blueberry filling. Trim any excess strips.

Brush the edges of the puff pastry and the lattice strips with the beaten egg wash. Sprinkle the entire pie with 1 teaspoon of granulated sugar.

Bake for 25-30 minutes, or until the puff pastry is golden brown and puffed, and the filling is set. If the pastry edges brown too quickly, you can loosely tent the pie with aluminum foil.

Remove from oven and let cool on the baking sheet for at least 10 minutes before slicing and serving. Garnish with fresh blueberries, if desired.


Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.

Prepare the blueberry filling: In a small saucepan, combine 1 1/2 cups of blueberries, brown sugar, and orange zest. Cook over medium heat for 5-7 minutes, stirring occasionally, until the blueberries soften and release their juices, and the mixture thickens slightly. Remove from heat and let cool slightly.

Prepare the cream filling: In a medium bowl, whisk together sour cream, 1/4 cup granulated sugar, 2 large eggs, and vanilla extract until smooth and well combined.

Unroll the thawed puff pastry sheet onto the prepared baking sheet. Using a sharp knife or pizza cutter, cut the pastry into a large rectangle (approximately 9x12 inches). Cut off any excess pastry to create a clean rectangle. Reserve the excess pastry for the lattice.

Spread the cream filling evenly over the puff pastry rectangle, leaving a 1/2-inch border around the edges.

Spoon the cooled blueberry filling over the cream filling.

From the reserved puff pastry scraps, cut thin strips (about 1/2-inch wide). Arrange these strips in a lattice pattern over the blueberry filling. Trim any excess strips.

Brush the edges of the puff pastry and the lattice strips with the beaten egg wash. Sprinkle the entire pie with 1 teaspoon of granulated sugar.

Bake for 25-30 minutes, or until the puff pastry is golden brown and puffed, and the filling is set. If the pastry edges brown too quickly, you can loosely tent the pie with aluminum foil.

Remove from oven and let cool on the baking sheet for at least 10 minutes before slicing and serving. Garnish with fresh blueberries, if desired.
