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

Roll out the thawed puff pastry on a floured surface and cut into 3x3 inch squares.

In a mixing bowl, combine softened cream cheese, granulated sugar, vanilla extract, and lemon juice until smooth.

Place approximately 1 tablespoon of the creamy mixture in the center of each pastry square.

Fold the corners of the pastry squares toward the center or leave them open-faced.

Brush the edges of the pastry with the beaten egg or milk for a vegan option.

Bake for 15-18 minutes until puffed and golden brown.

Transfer to a wire rack. Prepare the glaze by mixing powdered sugar and milk until smooth.

Drizzle the glaze over the cooled pastries and serve warm.