1. Preheat your oven to 350 degrees F (175 degrees C) and grease a 9x13 inch rectangular baking pan.

2. Press the sugar cookie dough evenly into the bottom of the prepared baking pan to form the crust.

3. Bake for 12 to 15 minutes until the edges are lightly golden brown. Let the crust cool completely.

4. In a medium bowl, beat the softened cream cheese, powdered sugar, and vanilla extract until smooth.

5. In a separate bowl, whip the heavy cream until stiff peaks form, then gently fold it into the cream cheese mixture.

6. Spread the cream mixture evenly over the cooled cookie crust.

7. Arrange the blueberries in the top left corner to represent the stars. Arrange the raspberries in horizontal rows to represent the stripes.

8. Chill in the refrigerator for at least one hour before slicing and serving.