Prepare the Puff Pastry : Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper. Roll out the thawed puff pastry on a lightly floured surface to remove any creases. Cut it into 12 equal squares or rectangles.

Make the Cream Cheese Filling : In a mixing bowl, beat the softened cream cheese, granulated sugar, and vanilla extract until smooth and creamy.

Assemble the Bites : Place a dollop (about 1 teaspoon) of cream cheese filling in the center of each puff pastry square. Add a small spoonful of raspberry jam on top of the cream cheese filling. Fold the corners of the pastry inward to create a pinwheel or leave it as a simple square with filling exposed.

Bake the Pastry Bites : Transfer the assembled bites to the prepared baking sheet, leaving space between them. Bake for 15-18 minutes or until the pastry is golden brown and puffed.

Garnish and Serve : Let the bites cool slightly on a wire rack. Garnish with fresh raspberries and a light dusting of powdered sugar, if desired. Serve warm or at room temperature.