Thaw the puff pastry sheets in the packaging at room temperature for 40 minutes.
Preheat the oven to 425 degrees.
In a small mixing bowl, cream together the softened cream cheese and sugar until smooth. Add the vanilla and lemon zest and mix until combined.
Remove 1/4 cup of the cream cheese (without the addition of the egg) mixture to use as a drizzle later.
Add the egg to the lemon cream cheese mixture, and continue beating until combined.
Line 2 large baking sheets with parchment paper or use non-stick spray.
Gently unfold each sheet of puff pastry. Use a fingertip to smooth the fold lines.
Use a pizza slicer to cut along both of the fold lines creating 3 strips, and then cut once the other direction to create 6 rectangles from each sheet of puff pastry that are about 3" x 4"
Score each pasty with a knife about a 1/2" from the outside edge, making a rectangle inside of a rectangle, but not all the way through the pastry.
Whisk the other egg with 1 tablespoons of water and brush along the outer rectangle.
Smooth about 2 tablespoons of the cream cheese mixture to the edges of the interior pastry rectangle.
Very gently stir the fresh raspberries together with one tablespoon of lemon juice and 1 tablespoon sugar.
Place 6 raspberries upside down on the cream cheese on each pastry.
Bake for 16-20 minutes until golden brown.
Cool for 3-5 minutes.
Mix the reserved 1/4 cup of cream cheese mixture with 1-2 tablespoons half and half, cream, or milk.
Drizzle over the warm pastries and serve immediately. Garnish with lemon zest.
Optional: For glistening berries, brush with heated jam or jelly.