Preheat your oven to 400°F (200°C). Roll out the thawed puff pastry on a lightly floured surface until it's about 1/8 inch thick. Cut out circles with a round cookie cutter, approximately 3 inches in diameter, and place them on a parchment-lined baking tray.

Bake the pastry circles in the preheated oven for 15-20 minutes or until puffed and golden brown. Once baked, let them cool completely on a wire rack.

In a mixing bowl, combine chilled heavy cream, powdered sugar, and vanilla extract. Whip the mixture on medium-high speed until soft peaks form, around 3-5 minutes.

Slice each cooled puff pastry circle in half. Spoon or pipe a generous amount of whipped cream filling onto the bottom half and top with an assortment of fresh berries.

Dust the assembled pastries with a light coating of powdered sugar. Serve immediately for the best experience.