American Flag Cookie Cake

INGREDIENTS

1 1/3 cups

all-purpose flour

1/3 cup

light brown sugar, packed

11 tbsp

unsalted butter, softened

4 oz

cream cheese (half of one 8-ounce package), at room temp

8 tbsp

unsalted butter, at room temp

3/4 cup

powdered sugar

1 tsp

vanilla extract

1 cup

blueberries

3 cups

raspberries

1/4 cup

white chocolate chips

Quarter size (9x13 inches) rimmed baking sheet