01 - Preheat oven to 350°F.
02 - Press sugar cookie dough evenly onto an ungreased 13x9 inch baking sheet or rectangular pizza pan to form the crust.
03 - Bake in the preheated oven for 15 to 18 minutes, or until lightly golden. Remove from oven and allow crust to cool completely.
04 - In a medium bowl, beat together cream cheese, butter, powdered sugar, and vanilla extract until mixture is smooth and creamy.
05 - Spread the cream cheese frosting evenly over the entire cooled cookie crust.
06 - Arrange blueberries in the upper left corner of the frosted crust to create the flag's blue 'star' field.
07 - Alternately arrange rows of sliced strawberries and banana slices across the rest of the pizza to form red and white stripes.
08 - Chill assembled dessert in the refrigerator for at least 30 minutes before slicing and serving.