Preheat the oven to 350°F (175°C).

Roll out the sugar cookie dough on a lightly floured surface and shape it into a large rectangle (about 12x18 inches) for the cookie pizza.

Transfer the rolled-out dough to a baking sheet lined with parchment paper and bake for 10 to 12 minutes or until golden brown.

Remove the cookie crust from the oven and allow it to cool completely on a wire rack.

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

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

Arrange the sliced strawberries in the top left corner to create the blue field of the flag, then place blueberries on top of the strawberries to represent the stars.

Use banana slices to create alternating rows of white and red stripes, followed by raspberries and blackberries to fill in the remaining sections of the flag.

Drizzle a little lemon juice over the fruit to prevent browning and add a hint of freshness.

Slice into squares or wedges and serve chilled for a festive 4th of July treat.