Creating your own Raspberry Danish can be straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
2. Prepare the Filling: In a medium bowl, combine raspberries, granulated sugar, cornstarch, and lemon juice. Gently mix and set aside.
3. Roll Out the Pastry: On a lightly floured surface, roll out the puff pastry sheet to smooth out any creases.
4. Cut the Pastry: Cut the pastry into squares or rectangles, about 4×4 inches in size.
5. Create a Border: Using a knife, score a smaller square inside each piece, about 1/2 inch from the edges, being careful not to cut all the way through.
6. Add the Filling: Place a spoonful of the raspberry filling in the center of each pastry square, avoiding the edges.
7. Fold the Corners: Gently fold the corners of the pastry towards the center, creating an open square shape.
8. Apply Egg Wash: Beat the egg in a small bowl and brush it over the pastry edges for a golden finish.
9. Bake: Place the pastries on the prepared baking sheet and bake in the preheated oven for 20-25 minutes or until golden brown.
10. Cool: Once baked, remove the pastries from the oven and let them cool on a wire rack for 10-15 minutes.
11. Dust with Powdered Sugar: If desired, dust the cooled pastries with powdered sugar before serving.

These steps will guide you in creating this incredible Raspberry Danish effortlessly.