1. In a small bowl stir together cream cheese, sugar and vanilla until smooth. Spread on top of Pop-Tarts®, completely covering tops.
2. Lengthwise quarter raspberries or halve strawberries and thinly slice. Arrange 9 blueberries on top left corner of each Pop-Tart® to make "stars" on flags. Arrange raspberries or strawberries on top of Pop-Tarts® to make "red stripes" on flags. Serve immediately or cover and refrigerate for up to 12 hours.