Creating the Lemon Blueberry Cream Cheese Danish is straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.
2. Prepare the Filling: In a mixing bowl, combine the softened cream cheese, granulated sugar, and vanilla extract. Beat until smooth and creamy.
3. Prepare the Pastry: Roll out each thawed puff pastry sheet on a lightly floured surface. Cut each sheet into four squares.
4. Add the Cream Cheese Mixture: Place a generous spoonful of the cream cheese mixture in the center of each pastry square. Spread it slightly but leave room around the edges.
5. Add the Blueberries: In a separate bowl, toss the blueberries with lemon juice and zest. Spoon a few blueberries over the cream cheese filling for each square.
6. Fold the Pastry: Fold the corners of each pastry square toward the center, overlapping them slightly, creating a star shape. Pinch the edges to seal.
7. Apply Egg Wash: Brush the tops of the Danish with the beaten egg to give them a beautiful golden color when baked.
8. Bake: Place the Danish on the prepared baking sheet and bake in the preheated oven for 25-30 minutes, until golden brown.
9. Cool: Remove the Danish from the oven and allow them to cool on a wire rack for about 15-20 minutes.
10. Dust with Powdered Sugar: If desired, dust the cooled Danish with powdered sugar before serving.

By following these steps, you will be able to create this amazing Lemon Blueberry Cream Cheese Danish flawlessly!